TERMIUM Plus®
The Government of Canada’s terminology and linguistic data bank.
MYELIN SHEATH [8 records]
Record 1 - internal organization data 2019-12-05
Record 1, English
Record 1, Subject field(s)
- Human Diseases - Various
- Genetics
- Nervous System
Record 1, Main entry term, English
- leukodystrophy
1, record 1, English, leukodystrophy
correct
Record 1, Abbreviations, English
Record 1, Synonyms, English
Record 1, Textual support, English
Record number: 1, Textual support number: 1 CONT
Leukodystrophies are a group of rare, progressive, metabolic, genetic diseases that affect the brain, spinal cord and often the peripheral nerves. Each type of leukodystrophy is caused by a specific gene abnormality that leads to abnormal development or destruction of the white matter(myelin sheath) of the brain. 2, record 1, English, - leukodystrophy
Record number: 1, Textual support number: 1 OBS
leukodystrophy: designation often used in the plural. 3, record 1, English, - leukodystrophy
Record 1, Key term(s)
- leukodystrophies
Record 1, French
Record 1, Domaine(s)
- Maladies humaines diverses
- Génétique
- Système nerveux
Record 1, Main entry term, French
- leucodystrophie
1, record 1, French, leucodystrophie
correct, feminine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
Record 1, Textual support, French
Record number: 1, Textual support number: 1 CONT
Les leucodystrophies constituent un groupe de maladies rares et évolutives d'origine génétique qui affectent le cerveau, et parfois la moelle épinière et les nerfs périphériques. Chaque type de leucodystrophie est causé par une anomalie génétique précise qui mène au développement anormal ou à la destruction de la substance blanche (gaine de myéline) du cerveau. 2, record 1, French, - leucodystrophie
Record number: 1, Textual support number: 1 OBS
leucodystrophie : désignation souvent utilisée au pluriel. 3, record 1, French, - leucodystrophie
Record 1, Key term(s)
- leucodystrophies
Record 1, Spanish
Record 1, Textual support, Spanish
Record 2 - internal organization data 2011-06-21
Record 2, English
Record 2, Subject field(s)
- Muscles and Tendons
- Nervous System
Record 2, Main entry term, English
- unmyelinated
1, record 2, English, unmyelinated
correct
Record 2, Abbreviations, English
Record 2, Synonyms, English
- amyelinic 1, record 2, English, amyelinic
correct
- nonmedullated 1, record 2, English, nonmedullated
correct
- nonmyelinated 1, record 2, English, nonmyelinated
correct
- unmedullated 1, record 2, English, unmedullated
correct
- amyelinated 1, record 2, English, amyelinated
correct
Record 2, Textual support, English
Record number: 2, Textual support number: 1 DEF
Referring to a nerve fiber lacking a myelin sheath. 1, record 2, English, - unmyelinated
Record 2, French
Record 2, Domaine(s)
- Muscles et tendons
- Système nerveux
Record 2, Main entry term, French
- amyélinique
1, record 2, French, amy%C3%A9linique
correct, adjective
Record 2, Abbreviations, French
Record 2, Synonyms, French
Record 2, Textual support, French
Record number: 2, Textual support number: 1 DEF
Réfère à une fibre nerveuse dépourvue de myéline. 1, record 2, French, - amy%C3%A9linique
Record 2, Spanish
Record 2, Textual support, Spanish
Record 3 - internal organization data 2011-02-10
Record 3, English
Record 3, Subject field(s)
- Nervous System
Record 3, Main entry term, English
- nerve fiber
1, record 3, English, nerve%20fiber
correct
Record 3, Abbreviations, English
Record 3, Synonyms, English
- neurofiber 1, record 3, English, neurofiber
correct
- fiber 1, record 3, English, fiber
- fibra 1, record 3, English, fibra
- neurofibra 1, record 3, English, neurofibra
Latin
Record 3, Textual support, English
Record number: 3, Textual support number: 1 DEF
A slender process of a neuron. 1, record 3, English, - nerve%20fiber
Record number: 3, Textual support number: 1 OBS
The term is often synonymous with axon. Nerve fibers are classified on the basis of the presence or absence of a myelin sheath as myelinated or unmyelinated. 1, record 3, English, - nerve%20fiber
Record 3, French
Record 3, Domaine(s)
- Système nerveux
Record 3, Main entry term, French
- cylindraxe
1, record 3, French, cylindraxe
correct, feminine noun
Record 3, Abbreviations, French
Record 3, Synonyms, French
- fibre nerveuse 1, record 3, French, fibre%20nerveuse
correct, feminine noun
Record 3, Textual support, French
Record number: 3, Textual support number: 1 CONT
L'axone, prolongement unique qui possède des branches collatérales et se termine par une arborisation de fibres dont chacune des branches aboutit à la plaque motrice d'une fibre musculaire, dans le cas d'un axone moteur. L'ensemble du corps cellulaire, de l'axone et des fibres musculaires qui en dépendent, constitue l'unité motrice. Recouvert de ses gaines, l'axone prend le nom de cylindraxe ou fibre nerveuse. 1, record 3, French, - cylindraxe
Record 3, Spanish
Record 3, Textual support, Spanish
Record 4 - internal organization data 2003-07-24
Record 4, English
Record 4, Subject field(s)
- Cytology
- Nervous System
Record 4, Main entry term, English
- Schwann cell
1, record 4, English, Schwann%20cell
correct
Record 4, Abbreviations, English
Record 4, Synonyms, English
Record 4, Textual support, English
Record number: 4, Textual support number: 1 DEF
A cell that forms the myelin sheath of a nerve fibre. 1, record 4, English, - Schwann%20cell
Record 4, French
Record 4, Domaine(s)
- Cytologie
- Système nerveux
Record 4, Main entry term, French
- cellule de Schwann
1, record 4, French, cellule%20de%20Schwann
correct, feminine noun
Record 4, Abbreviations, French
Record 4, Synonyms, French
Record 4, Textual support, French
Record number: 4, Textual support number: 1 OBS
[...] les cellules de Schwann [synthétisent] la myéline des nerfs. 1, record 4, French, - cellule%20de%20Schwann
Record 4, Spanish
Record 4, Campo(s) temático(s)
- Citología
- Sistema nervioso
Record 4, Main entry term, Spanish
- célula de Schwann
1, record 4, Spanish, c%C3%A9lula%20de%20Schwann
correct, feminine noun
Record 4, Abbreviations, Spanish
Record 4, Synonyms, Spanish
Record 4, Textual support, Spanish
Record number: 4, Textual support number: 1 DEF
Célula que envuelve los axones de las neuronas en el sistema nervioso periférico. 1, record 4, Spanish, - c%C3%A9lula%20de%20Schwann
Record 5 - internal organization data 1998-03-03
Record 5, English
Record 5, Subject field(s)
- Nervous System
Record 5, Main entry term, English
- myelin sheath
1, record 5, English, myelin%20sheath
correct
Record 5, Abbreviations, English
Record 5, Synonyms, English
- medullary sheath 2, record 5, English, medullary%20sheath
correct
Record 5, Textual support, English
Record number: 5, Textual support number: 1 DEF
An insulating covering around the axon of a neuron, which increases the conduction velocity of the nerve impulse along the axon. It is formed from the cell membrane of a Schwann cell (in the peripheral nervous system) or of an oligo-dendrocyte (in the central nervous system). 2, record 5, English, - myelin%20sheath
Record 5, French
Record 5, Domaine(s)
- Système nerveux
Record 5, Main entry term, French
- gaine de myéline
1, record 5, French, gaine%20de%20my%C3%A9line
correct, feminine noun
Record 5, Abbreviations, French
Record 5, Synonyms, French
Record 5, Textual support, French
Record number: 5, Textual support number: 1 OBS
Gaine protectrice du système nerveux central. 1, record 5, French, - gaine%20de%20my%C3%A9line
Record 5, Spanish
Record 5, Textual support, Spanish
Record 6 - internal organization data 1995-06-01
Record 6, English
Record 6, Subject field(s)
- Endocrine System and Metabolism
- Nervous System
Record 6, Main entry term, English
- cell body 1, record 6, English, cell%20body
Record 6, Abbreviations, English
Record 6, Synonyms, English
- soma 2, record 6, English, soma
- perikaryon 2, record 6, English, perikaryon
Record 6, Textual support, English
Record number: 6, Textual support number: 1 DEF
The nucleus together with the cytoplasm around it .... 2, record 6, English, - cell%20body
Record number: 6, Textual support number: 1 CONT
Preganglionic axons lose their myelin sheath before they reach the cell bodies. 3, record 6, English, - cell%20body
Record 6, French
Record 6, Domaine(s)
- Systèmes endocrinien et métabolique
- Système nerveux
Record 6, Main entry term, French
- corps cellulaire
1, record 6, French, corps%20cellulaire
masculine noun
Record 6, Abbreviations, French
Record 6, Synonyms, French
- soma 2, record 6, French, soma
masculine noun
- pericaryon 3, record 6, French, pericaryon
masculine noun
Record 6, Textual support, French
Record number: 6, Textual support number: 1 DEF
Centre vital qui contrôle l'activité métabolique de la cellule [nerveuse] [...] 2, record 6, French, - corps%20cellulaire
Record number: 6, Textual support number: 1 CONT
L'influx arrive par l'un de ces dentrites, gagne le corps cellulaire et sort par l'axone. 4, record 6, French, - corps%20cellulaire
Record 6, Spanish
Record 6, Textual support, Spanish
Record 7 - internal organization data 1986-12-02
Record 7, English
Record 7, Subject field(s)
- Nervous System
Record 7, Main entry term, English
- remyelination
1, record 7, English, remyelination
correct
Record 7, Abbreviations, English
Record 7, Synonyms, English
Record 7, Textual support, English
Record number: 7, Textual support number: 1 DEF
The restoration of the myelin sheath of a nerve or nerves after demyelination. 2, record 7, English, - remyelination
Record 7, French
Record 7, Domaine(s)
- Système nerveux
Record 7, Main entry term, French
- remyélinisation
1, record 7, French, remy%C3%A9linisation
correct, feminine noun
Record 7, Abbreviations, French
Record 7, Synonyms, French
Record 7, Textual support, French
Record number: 7, Textual support number: 1 CONT
La récupération neurologique peut résulter soit d'une suppléance par les fibres survivantes soit d'une récupération de la fonction conductrice des fibres endommagées. La remyélinisation est possible mais elle demeure rare, limitée et sa valeur fonctionnelle n'est pas prouvée. 1, record 7, French, - remy%C3%A9linisation
Record 7, Spanish
Record 7, Textual support, Spanish
Record 8 - internal organization data 1977-10-24
Record 8, English
Record 8, Subject field(s)
- Nervous System
Record 8, Main entry term, English
- nerve
1, record 8, English, nerve
correct
Record 8, Abbreviations, English
Record 8, Synonyms, English
Record 8, Textual support, English
Record number: 8, Textual support number: 1 CONT
A nerve is a bundle of neurites, also called "nerve fibers" in this connective. In vertebrates nerves are nearly always devoid of cell bodies, since these are situated in ganglia or in the central nervous system. Nerve fibers may or may not be each inclosed in a(...) "medullary" or "myelin sheath". 1, record 8, English, - nerve
Record 8, French
Record 8, Domaine(s)
- Système nerveux
Record 8, Main entry term, French
- nerf
1, record 8, French, nerf
correct, masculine noun
Record 8, Abbreviations, French
Record 8, Synonyms, French
Record 8, Textual support, French
Record number: 8, Textual support number: 1 CONT
La coordination nerveuse des Vertébrés met en jeu 4 éléments [dont le] nerf reliant récepteur sensoriel et organe effecteur au centre nerveux et par l'intermédiaire duquel l'information recueillie au niveau du récepteur sensoriel est transmise au centre nerveux, et la réponse élaborée dans ce centre est communiquée à l'organe effecteur. 1, record 8, French, - nerf
Record 8, Spanish
Record 8, Textual support, Spanish
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: