TERMIUM Plus®
The Government of Canada’s terminology and linguistic data bank.
YOLK SAC [12 records]
Record 1 - internal organization data 2021-10-26
Record 1, English
Record 1, Subject field(s)
- Animal Biology
- Fish
- Aquaculture
Record 1, Main entry term, English
- fry stage
1, record 1, English, fry%20stage
correct
Record 1, Abbreviations, English
Record 1, Synonyms, English
- fry phase 2, record 1, English, fry%20phase
correct
Record 1, Textual support, English
Record number: 1, Textual support number: 1 DEF
[A developmental period] of fish following the absorption of the yolk sac... 3, record 1, English, - fry%20stage
Record 1, French
Record 1, Domaine(s)
- Biologie animale
- Poissons
- Aquaculture
Record 1, Main entry term, French
- stade d'alevin
1, record 1, French, stade%20d%27alevin
correct, masculine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
- stade alevin 2, record 1, French, stade%20alevin
correct, masculine noun
- stade de fretin 3, record 1, French, stade%20de%20fretin
correct, masculine noun, less frequent
Record 1, Textual support, French
Record number: 1, Textual support number: 1 DEF
[Phase] du poisson suivant la résorption de son sac vitellin. 2, record 1, French, - stade%20d%27alevin
Record 1, Spanish
Record 1, Campo(s) temático(s)
- Biología animal
- Peces
- Acuicultura
Record 1, Main entry term, Spanish
- fase de jaramugo
1, record 1, Spanish, fase%20de%20jaramugo
feminine noun
Record 1, Abbreviations, Spanish
Record 1, Synonyms, Spanish
Record 1, Textual support, Spanish
Record 2 - internal organization data 2021-10-25
Record 2, English
Record 2, Subject field(s)
- Aquaculture
Record 2, Main entry term, English
- fry-rearing trough
1, record 2, English, fry%2Drearing%20trough
correct
Record 2, Abbreviations, English
Record 2, Synonyms, English
- fry rearing trough 2, record 2, English, fry%20rearing%20trough
correct
- fry trough 2, record 2, English, fry%20trough
correct
Record 2, Textual support, English
Record number: 2, Textual support number: 1 CONT
At hatching the [fish] sac fry are golden and fall through the egg basket and school in a tight cluster on the bottom of the tank. Sac fry do not need to be fed because they receive nourishment from the attached yolk sac. If a... fry-rearing trough is used, the sac fry are siphoned into a bucket using a [half-inch] hose and then transferred to the rearing trough. The yolk sac is absorbed by the fry in about 3 to 5 days, depending on water temperature. 1, record 2, English, - fry%2Drearing%20trough
Record 2, French
Record 2, Domaine(s)
- Aquaculture
Record 2, Main entry term, French
- auge d'alevinage
1, record 2, French, auge%20d%27alevinage
correct, feminine noun
Record 2, Abbreviations, French
Record 2, Synonyms, French
Record 2, Textual support, French
Record 2, Spanish
Record 2, Textual support, Spanish
Record 3 - internal organization data 2021-05-27
Record 3, English
Record 3, Subject field(s)
- Fish
- Aquaculture
Record 3, Main entry term, English
- swim-up fry
1, record 3, English, swim%2Dup%20fry
correct
Record 3, Abbreviations, English
Record 3, Synonyms, English
- first-feeding fry 2, record 3, English, first%2Dfeeding%20fry
correct
- free-swimming fry 3, record 3, English, free%2Dswimming%20fry
correct
Record 3, Textual support, English
Record number: 3, Textual support number: 1 CONT
When the yolk sac is almost completely absorbed, alevins begin to feed exogenously; this is … commonly referred to as "swim-up fry. "Unlike most species, salmonids have a functional stomach present before external feeding begins... Food taken at first feeding is related to the gape of the mouth, but also to prey abundance, size, availability, and mobility. 4, record 3, English, - swim%2Dup%20fry
Record 3, French
Record 3, Domaine(s)
- Poissons
- Aquaculture
Record 3, Main entry term, French
- alevin nageant
1, record 3, French, alevin%20nageant
correct, masculine noun
Record 3, Abbreviations, French
Record 3, Synonyms, French
- alevin à vésicule résorbée 2, record 3, French, alevin%20%C3%A0%20v%C3%A9sicule%20r%C3%A9sorb%C3%A9e
correct, masculine noun
- alevin après résorption de la vésicule 3, record 3, French, alevin%20apr%C3%A8s%20r%C3%A9sorption%20de%20la%20v%C3%A9sicule
correct, masculine noun
Record 3, Textual support, French
Record 3, Spanish
Record 3, Textual support, Spanish
Record 4 - internal organization data 2021-03-31
Record 4, English
Record 4, Subject field(s)
- Marine Biology
- Fish
- Aquaculture
Record 4, Main entry term, English
- alevin stage
1, record 4, English, alevin%20stage
correct
Record 4, Abbreviations, English
Record 4, Synonyms, English
- sac fry stage 1, record 4, English, sac%20fry%20stage
correct
Record 4, Textual support, English
Record number: 4, Textual support number: 1 DEF
[A period of development] of fish from hatching to end of dependence on [the] yolk sac as [a] primary source of nutrition. 2, record 4, English, - alevin%20stage
Record 4, French
Record 4, Domaine(s)
- Biologie marine
- Poissons
- Aquaculture
Record 4, Main entry term, French
- stade d'alevin vésiculé
1, record 4, French, stade%20d%27alevin%20v%C3%A9sicul%C3%A9
correct, masculine noun
Record 4, Abbreviations, French
Record 4, Synonyms, French
- stade alevin vésiculé 2, record 4, French, stade%20alevin%20v%C3%A9sicul%C3%A9
correct, masculine noun
Record 4, Textual support, French
Record number: 4, Textual support number: 1 DEF
[Phase] de croissance du poisson allant de l'éclosion jusqu'à la fin de sa dépendance des réserves alimentaires de son sac vitellin. 2, record 4, French, - stade%20d%27alevin%20v%C3%A9sicul%C3%A9
Record 4, Spanish
Record 4, Textual support, Spanish
Record 5 - internal organization data 2021-01-07
Record 5, English
Record 5, Subject field(s)
- Animal Reproduction
- Pregnancy
Record 5, Main entry term, English
- yolk sac
1, record 5, English, yolk%20sac
correct
Record 5, Abbreviations, English
Record 5, Synonyms, English
- vitelline sac 2, record 5, English, vitelline%20sac
correct
Record 5, Textual support, English
Record number: 5, Textual support number: 1 DEF
A membranous sac of most vertebrates that encloses the yolk, is attached in most forms(as in humans) through the yolk stalk with the intestinal cavity of the embryo, and is supplied with blood vessels that transport nutritive yolk products to the developing embryo. 3, record 5, English, - yolk%20sac
Record number: 5, Textual support number: 1 OBS
In birds and reptiles, the yolk sac encloses the yolk; in most mammals, a fluid replaces the yolk. 4, record 5, English, - yolk%20sac
Record 5, French
Record 5, Domaine(s)
- Reproduction des animaux
- Grossesse
Record 5, Main entry term, French
- sac vitellin
1, record 5, French, sac%20vitellin
correct, masculine noun
Record 5, Abbreviations, French
Record 5, Synonyms, French
- vésicule vitelline 2, record 5, French, v%C3%A9sicule%20vitelline
correct, feminine noun
- vésicule ombilicale 3, record 5, French, v%C3%A9sicule%20ombilicale
correct, feminine noun
Record 5, Textual support, French
Record number: 5, Textual support number: 1 CONT
Le sac vitellin représente un vestige de l'évolution des vertébrés. 4, record 5, French, - sac%20vitellin
Record 5, Spanish
Record 5, Campo(s) temático(s)
- Reproducción de animales
- Embarazo
Record 5, Main entry term, Spanish
- saco vitelino
1, record 5, Spanish, saco%20vitelino
correct, masculine noun
Record 5, Abbreviations, Spanish
Record 5, Synonyms, Spanish
- vesícula vitelina 2, record 5, Spanish, ves%C3%ADcula%20vitelina
correct, feminine noun
- bolsa vitelina 3, record 5, Spanish, bolsa%20vitelina
feminine noun
Record 5, Textual support, Spanish
Record number: 5, Textual support number: 1 DEF
Cavidad que contiene la yema, a cuyas expensas ocurre el desarrollo embrionario de aves, peces y reptiles; un órgano homólogo, sin yema, se encuentra en el embrión de la mayoría de los mamíferos. 4, record 5, Spanish, - saco%20vitelino
Record 6 - internal organization data 2020-06-05
Record 6, English
Record 6, Subject field(s)
- Fish
- Aquaculture
Record 6, Main entry term, English
- alevin
1, record 6, English, alevin
correct
Record 6, Abbreviations, English
Record 6, Synonyms, English
- yolk fry 2, record 6, English, yolk%20fry
correct
- sac fry 3, record 6, English, sac%20fry
correct
Record 6, Textual support, English
Record number: 6, Textual support number: 1 DEF
A very young fish which has not yet fully absorbed its yolk sac. 4, record 6, English, - alevin
Record number: 6, Textual support number: 1 OBS
Especially a young salmon, clupeid or trout fry with the yolk sac still attached. 5, record 6, English, - alevin
Record 6, French
Record 6, Domaine(s)
- Poissons
- Aquaculture
Record 6, Main entry term, French
- alevin
1, record 6, French, alevin
correct, masculine noun
Record 6, Abbreviations, French
Record 6, Synonyms, French
- alevin vésiculé 2, record 6, French, alevin%20v%C3%A9sicul%C3%A9
correct, masculine noun
Record 6, Textual support, French
Record number: 6, Textual support number: 1 DEF
Très jeune poisson vivant encore des réserves alimentaires de son sac vitellin. 3, record 6, French, - alevin
Record 6, Spanish
Record 6, Campo(s) temático(s)
- Peces
- Acuicultura
Record 6, Main entry term, Spanish
- alevín
1, record 6, Spanish, alev%C3%ADn
correct, masculine noun
Record 6, Abbreviations, Spanish
Record 6, Synonyms, Spanish
Record 6, Textual support, Spanish
Record number: 6, Textual support number: 1 CONT
Los alevines se irán alimentando en los primeros días de vida de su propio saco vitelino hasta alcanzar tamaño suficiente para abandonar la boca de la madre. 1, record 6, Spanish, - alev%C3%ADn
Record 7 - internal organization data 2018-03-09
Record 7, English
Record 7, Subject field(s)
- Animal Diseases
- Fish
- Aquaculture
Record 7, Main entry term, English
- blue-sac disease
1, record 7, English, blue%2Dsac%20disease
correct
Record 7, Abbreviations, English
Record 7, Synonyms, English
Record 7, Textual support, English
Record number: 7, Textual support number: 1 DEF
A form of dropsy in which the yolk sac is visible as a blue-grey coloration caused by exposure of developing eggs or fry to waters containing too much nitrogen gas(which can be due to pump malfunction). 1, record 7, English, - blue%2Dsac%20disease
Record 7, French
Record 7, Domaine(s)
- Maladies des animaux
- Poissons
- Aquaculture
Record 7, Main entry term, French
- maladie du sac bleu
1, record 7, French, maladie%20du%20sac%20bleu
correct, feminine noun
Record 7, Abbreviations, French
Record 7, Synonyms, French
Record 7, Textual support, French
Record number: 7, Textual support number: 1 DEF
Forme d'hydropsie qui se caractérise par la coloration bleu-gris du sac vitellin due au contact des œufs ou des alevins avec des eaux contenant un excès d'azote gazeux (pouvant être attribuable à un mauvais fonctionnement des pompes). 1, record 7, French, - maladie%20du%20sac%20bleu
Record 7, Spanish
Record 7, Textual support, Spanish
Record 8 - internal organization data 2016-02-29
Record 8, English
Record 8, Subject field(s)
- Fish
- Aquaculture
- Commercial Fishing
Record 8, Main entry term, English
- fry
1, record 8, English, fry
correct, noun, plural
Record 8, Abbreviations, English
Record 8, Synonyms, English
Record 8, Textual support, English
Record number: 8, Textual support number: 1 DEF
The young stage of fishes, particularly after the yolk sac has been absorbed and active feeding commenced. 2, record 8, English, - fry
Record number: 8, Textual support number: 1 OBS
Underyearling Atlantic salmon are called "fry" during their first summer and "parr" thereafter until they become "smolts" and go to sea. 3, record 8, English, - fry
Record 8, French
Record 8, Domaine(s)
- Poissons
- Aquaculture
- Pêche commerciale
Record 8, Main entry term, French
- alevin
1, record 8, French, alevin
correct, masculine noun, Canada
Record 8, Abbreviations, French
Record 8, Synonyms, French
- fretin 2, record 8, French, fretin
correct, masculine noun
Record 8, Textual support, French
Record number: 8, Textual support number: 1 DEF
Stade débutant au moment où le poisson arrête de puiser sa nourriture du sac vitellin et prenant fin lorsque les marques du tacon sont clairement visibles, c'est-à-dire 6 à 10 semaines après le démarrage. 3, record 8, French, - alevin
Record number: 8, Textual support number: 1 OBS
Utilisé pour toutes les espèces de la résorption totale du sac vitellin jusqu'au stade d'alevin avancé (environ 1½ pouce). 3, record 8, French, - alevin
Record number: 8, Textual support number: 2 OBS
Nomenclature à utiliser en pisciculture aux différents stades de production. 3, record 8, French, - alevin
Record 8, Spanish
Record 8, Campo(s) temático(s)
- Peces
- Acuicultura
- Pesca comercial
Record 8, Main entry term, Spanish
- alevín
1, record 8, Spanish, alev%C3%ADn
correct, masculine noun
Record 8, Abbreviations, Spanish
Record 8, Synonyms, Spanish
- alevine 2, record 8, Spanish, alevine
correct, masculine noun
- alevino 2, record 8, Spanish, alevino
correct, masculine noun
Record 8, Textual support, Spanish
Record number: 8, Textual support number: 1 DEF
Etapa [del pez] comprendida entre la eclosión hasta inicio de la smoltificación. 3, record 8, Spanish, - alev%C3%ADn
Record number: 8, Textual support number: 1 CONT
Cuando el huevo eclosiona, el pez joven (el alevín) dispone aún de algunas reservas en el saco vitelino que cuelga de su vientre, el vitelo. 4, record 8, Spanish, - alev%C3%ADn
Record 9 - internal organization data 2012-01-16
Record 9, English
Record 9, Subject field(s)
- Blood
Record 9, Main entry term, English
- hematopoietic organ
1, record 9, English, hematopoietic%20organ
correct
Record 9, Abbreviations, English
Record 9, Synonyms, English
Record 9, Textual support, English
Record number: 9, Textual support number: 1 CONT
The term hematopoiesis refers to the formation and development of the cells of the blood. In humans this process begins in the yolk sac in the first weeks of embryonic development. By the third month of gestation, stem cells migrate to the fetal liver and then to the spleen(between 3-7 mths these two organs play a major hempatopoietic role). Next, the bone marrow becomes the major hematopoietic organ and hematopoiesis ceases in the liver and spleen. 1, record 9, English, - hematopoietic%20organ
Record 9, Key term(s)
- blood-forming organ
Record 9, French
Record 9, Domaine(s)
- Sang
Record 9, Main entry term, French
- organe hématopoïétique
1, record 9, French, organe%20h%C3%A9matopo%C3%AF%C3%A9tique
correct, masculine noun
Record 9, Abbreviations, French
Record 9, Synonyms, French
Record 9, Textual support, French
Record number: 9, Textual support number: 1 DEF
Organe qui assure la formation des éléments figurés du sang. 2, record 9, French, - organe%20h%C3%A9matopo%C3%AF%C3%A9tique
Record 9, Key term(s)
- organe sanguinoformateur
- organe hémoformateur
Record 9, Spanish
Record 9, Textual support, Spanish
Record 10 - internal organization data 2011-05-30
Record 10, English
Record 10, Subject field(s)
- The Genitals
Record 10, Main entry term, English
- yolk sac tumor
1, record 10, English, yolk%20sac%20tumor
correct
Record 10, Abbreviations, English
Record 10, Synonyms, English
Record 10, Textual support, English
Record number: 10, Textual support number: 1 DEF
An highly malignant germ cell tumor of the testis and ovary containing structures resembling those seen in the yolk sac and other embryogenic tissues. 2, record 10, English, - yolk%20sac%20tumor
Record number: 10, Textual support number: 1 OBS
Most adult cases occur as a component or mixed germ cell neoplasm. Pure forms present as infiltrative, homogenous, yellow-white mucinous lesions. 2, record 10, English, - yolk%20sac%20tumor
Record number: 10, Textual support number: 2 OBS
Variously called infantile embryonal carcinoma, mesonephroma, orchidoblastoma, testicular adenocarcinoma of the infancy, and endodermal sinus tumor. Most adult cases occur as a component or mixed germ cell neoplasm. Pure forms present as infiltrative, homogenous, yellow-white mucinous lesions. 3, record 10, English, - yolk%20sac%20tumor
Record 10, French
Record 10, Domaine(s)
- Organes génitaux
Record 10, Main entry term, French
- tumeur vitelline
1, record 10, French, tumeur%20vitelline
correct, feminine noun
Record 10, Abbreviations, French
Record 10, Synonyms, French
Record 10, Textual support, French
Record number: 10, Textual support number: 1 DEF
Tumeur germinale maligne du testicule ou de l'ovaire. 2, record 10, French, - tumeur%20vitelline
Record number: 10, Textual support number: 1 CONT
La tumeur vitelline du testicule est encore appelée tumeur du sinus endodermique ou carcinome embryonnaire de type infantile, ou orchioblastome, ou adénocarcinome embryonnaire alors que la tumeur vitelline de l'ovaire ou tumeur du sinus endodermique, a été longtemps désignée sous le terme de mésonéphrome de Schiller ou de papillo-endothéliome ou de mésoblastome, en raison des ressemblances qu'on avait cru relever entre ses aspects histologiques et les glomérules du mésonéphrome, les proliférations endothéliales ou les mésoblastes de l'embryon. 2, record 10, French, - tumeur%20vitelline
Record number: 10, Textual support number: 1 OBS
La tumeur vitelline se développe plus souvent à l'état pur dans l'ovaire que dans le testicule. 3, record 10, French, - tumeur%20vitelline
Record 10, Spanish
Record 10, Textual support, Spanish
Record 11 - internal organization data 2006-04-19
Record 11, English
Record 11, Subject field(s)
- Aquaculture
- Fish
Record 11, Main entry term, English
- fingerling stage
1, record 11, English, fingerling%20stage
correct
Record 11, Abbreviations, English
Record 11, Synonyms, English
- underyearling stage 1, record 11, English, underyearling%20stage
correct
- under-yearling stage 1, record 11, English, under%2Dyearling%20stage
correct
Record 11, Textual support, English
Record number: 11, Textual support number: 1 DEF
The stage of fish which has absorbed its yolk sac but has not yet reached marketable size. 1, record 11, English, - fingerling%20stage
Record 11, French
Record 11, Domaine(s)
- Aquaculture
- Poissons
Record 11, Main entry term, French
- stade juvénile
1, record 11, French, stade%20juv%C3%A9nile
correct, masculine noun
Record 11, Abbreviations, French
Record 11, Synonyms, French
Record 11, Textual support, French
Record number: 11, Textual support number: 1 DEF
Stade d'un poisson qui a résorbé son sac vitellin, mais qui n'a pas encore atteint la taille marchande. 2, record 11, French, - stade%20juv%C3%A9nile
Record number: 11, Textual support number: 1 OBS
[...] poisson [qui] n'est pas encore capable de se reproduire. 3, record 11, French, - stade%20juv%C3%A9nile
Record 11, Spanish
Record 11, Textual support, Spanish
Record 12 - internal organization data 2003-11-19
Record 12, English
Record 12, Subject field(s)
- Cytology
Record 12, Main entry term, English
- endoderm
1, record 12, English, endoderm
correct
Record 12, Abbreviations, English
Record 12, Synonyms, English
Record 12, Textual support, English
Record number: 12, Textual support number: 1 DEF
The inner layer of the embryo, giving rise to the primitive intestine and the yolk sac. It forms the epithelium the digestive tube. 2, record 12, English, - endoderm
Record 12, French
Record 12, Domaine(s)
- Cytologie
Record 12, Main entry term, French
- endoderme
1, record 12, French, endoderme
correct, masculine noun
Record 12, Abbreviations, French
Record 12, Synonyms, French
Record 12, Textual support, French
Record number: 12, Textual support number: 1 DEF
Couche ou feuillet interne du troisième stade de développement de l'embryon (-Gastrula), dont le développement donne l'intestin primitif et la vésicule ombilicale (-aussi Ectoderme, mésoderme). 2, record 12, French, - endoderme
Record 12, Spanish
Record 12, Campo(s) temático(s)
- Citología
Record 12, Main entry term, Spanish
- endodermo
1, record 12, Spanish, endodermo
correct, masculine noun
Record 12, Abbreviations, Spanish
Record 12, Synonyms, Spanish
Record 12, Textual support, Spanish
Record number: 12, Textual support number: 1 DEF
Capa celular interna del embrión, que origina el epitelio del sistema digestivo, timo, tiroides, epitelio respiratorio y urinario, etc., de los vertebrados. 1, record 12, Spanish, - endodermo
Copyright notice for the TERMIUM Plus® data bank
© Public Services and Procurement Canada, 2025
TERMIUM Plus®, the Government of Canada's terminology and linguistic data bank
A product of the Translation Bureau
Features
Language Portal of Canada

Access a collection of Canadian resources on all aspects of English and French, including quizzes.
Writing tools

The Language Portal’s writing tools have a new look! Easy to consult, they give you access to a wealth of information that will help you write better in English and French.
Glossaries and vocabularies

Access Translation Bureau glossaries and vocabularies.
- Date Modified: