TERMIUM Plus®
From: Translation Bureau
On social media
Consult the Government of Canada’s terminology data bank.
UNSATURATED COMPOUND [10 records]
Record 1 - internal organization data 2011-08-23
Record 1, English
Record 1, Subject field(s)
- Chemical Elements and Compounds
Universal entry(ies) Record 1
Record 1, Main entry term, English
- acetylene hydrocarbon
1, record 1, English, acetylene%20hydrocarbon
correct
Record 1, Abbreviations, English
Record 1, Synonyms, English
- alkyne 2, record 1, English, alkyne
correct
Record 1, Textual support, English
Record number: 1, Textual support number: 1 DEF
A chemical compound which belongs to a class of unsaturated hydrocarbons of the homologous series and whose structural formula contains a triple bond. 3, record 1, English, - acetylene%20hydrocarbon
Record number: 1, Textual support number: 1 OBS
Generic chemical formula: CnH2n-2 3, record 1, English, - acetylene%20hydrocarbon
Record 1, French
Record 1, Domaine(s)
- Éléments et composés chimiques
Entrée(s) universelle(s) Record 1
Record 1, Main entry term, French
- hydrocarbure acétylénique
1, record 1, French, hydrocarbure%20ac%C3%A9tyl%C3%A9nique
correct, masculine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
- alcyne 2, record 1, French, alcyne
correct, masculine noun
- alkyne 3, record 1, French, alkyne
masculine noun, obsolete
Record 1, Textual support, French
Record number: 1, Textual support number: 1 DEF
Nom générique de hydrocarbures dérivant des alcanes, contenant une triple liaison C=C [...] 4, record 1, French, - hydrocarbure%20ac%C3%A9tyl%C3%A9nique
Record number: 1, Textual support number: 1 OBS
Formule chimique générale : CnH2n-2 5, record 1, French, - hydrocarbure%20ac%C3%A9tyl%C3%A9nique
Record 1, Spanish
Record 1, Campo(s) temático(s)
- Elementos y compuestos químicos
Entrada(s) universal(es) Record 1
Record 1, Main entry term, Spanish
- hidrocarburo acetilénico
1, record 1, Spanish, hidrocarburo%20acetil%C3%A9nico
correct, masculine noun
Record 1, Abbreviations, Spanish
Record 1, Synonyms, Spanish
- alquino 2, record 1, Spanish, alquino
correct, masculine noun
Record 1, Textual support, Spanish
Record number: 1, Textual support number: 1 DEF
Hidrocarburo insaturado de la serie homóloga [...] y cuya fórmula estructural contiene un triple enlace. 1, record 1, Spanish, - hidrocarburo%20acetil%C3%A9nico
Record number: 1, Textual support number: 1 OBS
Fórmula química genérica: CnH2n-2 3, record 1, Spanish, - hidrocarburo%20acetil%C3%A9nico
Record 2 - internal organization data 2011-01-12
Record 2, English
Record 2, Subject field(s)
- Chemical Elements and Compounds
- Biochemistry
Universal entry(ies) Record 2
Record 2, Main entry term, English
- pyrrole
1, record 2, English, pyrrole
correct
Record 2, Abbreviations, English
Record 2, Synonyms, English
Record 2, Textual support, English
Record number: 2, Textual support number: 1 DEF
A heterocyclic nitrogenous compound [which] is an unsaturated five-sided ring... considered to be a resonance hybrid. 1, record 2, English, - pyrrole
Record number: 2, Textual support number: 1 OBS
Pyrroles readily combine with such metals as iron, copper, and nickel, which accounts for their importance in the formation of such biochemically essential complexes as porphyrins. 1, record 2, English, - pyrrole
Record number: 2, Textual support number: 2 OBS
Chemical formula: C4H5N or C4H4NH 2, record 2, English, - pyrrole
Record 2, French
Record 2, Domaine(s)
- Éléments et composés chimiques
- Biochimie
Entrée(s) universelle(s) Record 2
Record 2, Main entry term, French
- pyrrole
1, record 2, French, pyrrole
correct, masculine noun
Record 2, Abbreviations, French
Record 2, Synonyms, French
- pyrrol 1, record 2, French, pyrrol
correct, masculine noun
Record 2, Textual support, French
Record number: 2, Textual support number: 1 DEF
Composé hétérocyclique azoté [...] à cycle pentagonal. 2, record 2, French, - pyrrole
Record number: 2, Textual support number: 1 OBS
Le noyau du pyrrole se retrouve dans de nombreux produits naturels : pigments biliaires, porphyrines, etc. 2, record 2, French, - pyrrole
Record number: 2, Textual support number: 2 OBS
Formule chimique : C4H5N ou C4H4NH 3, record 2, French, - pyrrole
Record 2, Spanish
Record 2, Textual support, Spanish
Record 3 - internal organization data 2010-02-18
Record 3, English
Record 3, Subject field(s)
- Chemical Elements and Compounds
- Petrochemistry
Record 3, Main entry term, English
- olefinically unsaturated monomer
1, record 3, English, olefinically%20unsaturated%20monomer
correct
Record 3, Abbreviations, English
Record 3, Synonyms, English
Record 3, Textual support, English
Record number: 3, Textual support number: 1 CONT
A process for making a polymer of acrylonitrile, methacrylonitrile and olefinically unsaturated monomers. ... A process for making a thermally stable melt processable acrylonitrile/methacrylonitrile/olefinically unsaturated multipolymer, comprising polymerizing a mixture of acrylonitrile monomer, methacrylonitrile monomer, and olefinically unsaturated monomer in which the rate of addition of the multimonomer mixture isset by the rate of polymerization so that the concentration of unreacted acrylonitrile monomer, unreacted methacrylonitrile monomer and unreacted olefinically unsaturated monomer is low and the polymerization process is in a monomer starved condition. 2, record 3, English, - olefinically%20unsaturated%20monomer
Record number: 3, Textual support number: 2 CONT
Process for the free-radical polymerisation of at least one olefinically unsaturated monomer, the polymerisation being performed in the presence of a compound for effecting molecular weight control, being a CoII chelate of formula(I), wherein each group X is a divalent group which forms with the two carbon atoms to which it is bonded a pericondensed polycyclic group, being a group having 3 or more carbocyclic rings where the oxime-containing carbocyclic ring has carbon atoms in common with 2 or more of the other rings, said polycyclic group being unsubstituted(apart from the oxime groups) or having at least one hydrocarbyl substitutent;... 3, record 3, English, - olefinically%20unsaturated%20monomer
Record 3, French
Record 3, Domaine(s)
- Éléments et composés chimiques
- Chimie du pétrole
Record 3, Main entry term, French
- monomère alcénique
1, record 3, French, monom%C3%A8re%20alc%C3%A9nique
correct, masculine noun
Record 3, Abbreviations, French
Record 3, Synonyms, French
Record 3, Textual support, French
Record number: 3, Textual support number: 1 DEF
Monomère réalisé à partir de carbure éthylénique. [Renseignement obtenu du vérificateur à Consommation et Corporations, en 1985] 2, record 3, French, - monom%C3%A8re%20alc%C3%A9nique
Record number: 3, Textual support number: 1 CONT
Procédé destiné à la polymérisation radicalaire libre d'au moins un monomère alcénique, cette polymérisation étant réalisée en présence d'un composé servant à obtenir une régulation de poids moléculaire, ce composé pouvant être un chélate de CoII de la formule (I), dans laquelle chaque groupe X est un groupe divalent formant avec les deux atomes de carbone auxquels il est lié un groupe polycyclique péricondensé, lequel groupe possède au moins trois cycles carbocycliques dans lesquels le cycle carbocyclique contenant des oximes possède des atomes de carbone en commun avec au moins deux des autres cycles, n'est pas substitué (à l'exception des groupes d'oximes) ou possède au moins un substituant hydrocarbyle; [...] 3, record 3, French, - monom%C3%A8re%20alc%C3%A9nique
Record 3, Spanish
Record 3, Textual support, Spanish
Record 4 - internal organization data 2002-04-11
Record 4, English
Record 4, Subject field(s)
- Analytical Chemistry
- Chemical Elements and Compounds
Record 4, Main entry term, English
- ozonolysis
1, record 4, English, ozonolysis
correct
Record 4, Abbreviations, English
Record 4, Synonyms, English
Record 4, Textual support, English
Record number: 4, Textual support number: 1 DEF
The use of ozone as a tool in analytical chemistry to locate double bonds in organic compounds, and a similar use in synthetic organic chemistry for preparing new compounds. Under proper conditions, ozone attaches itself at the double bond of an unsaturated compound to form an ozonide... 1, record 4, English, - ozonolysis
Record 4, French
Record 4, Domaine(s)
- Chimie analytique
- Éléments et composés chimiques
Record 4, Main entry term, French
- ozonolyse
1, record 4, French, ozonolyse
correct, feminine noun
Record 4, Abbreviations, French
Record 4, Synonyms, French
Record 4, Textual support, French
Record number: 4, Textual support number: 1 CONT
A partir des fragments d'ozonolyse, on reconstitue aisément la formule de l'alcène; aussi l'ozonolyse est-elle souvent employée pour élucider la structure des composés organiques naturels. 1, record 4, French, - ozonolyse
Record 4, Spanish
Record 4, Campo(s) temático(s)
- Química analítica
- Elementos y compuestos químicos
Record 4, Main entry term, Spanish
- ozonolisis
1, record 4, Spanish, ozonolisis
feminine noun
Record 4, Abbreviations, Spanish
Record 4, Synonyms, Spanish
Record 4, Textual support, Spanish
Record 5 - internal organization data 1999-02-11
Record 5, English
Record 5, Subject field(s)
- Chemistry
Record 5, Main entry term, English
- unsaturated aliphatic
1, record 5, English, unsaturated%20aliphatic
correct
Record 5, Abbreviations, English
Record 5, Synonyms, English
- unsaturated aliphatic compound 2, record 5, English, unsaturated%20aliphatic%20compound
correct
Record 5, Textual support, English
Record number: 5, Textual support number: 1 OBS
aliphatic: one of the major groups of organic compounds characterized by straight- or branched-chain arrangement of the constituent carbon atoms. Aliphatic hydrocarbons are comprised of three subgroups: (1) paraffins (alkanes), all of which are saturated and comparatively unreactive, ... (2) olefins (alkenes or alkadienes) which are unsaturated and quite reactive; (3) acetylenes (alkynes) .... 3, record 5, English, - unsaturated%20aliphatic
Record number: 5, Textual support number: 2 OBS
See records "aliphatic" and "unsaturated compound". 4, record 5, English, - unsaturated%20aliphatic
Record 5, French
Record 5, Domaine(s)
- Chimie
Record 5, Main entry term, French
- composé aliphatique non saturé
1, record 5, French, compos%C3%A9%20aliphatique%20non%20satur%C3%A9
correct, masculine noun
Record 5, Abbreviations, French
Record 5, Synonyms, French
- composé aliphatique insaturé 2, record 5, French, compos%C3%A9%20aliphatique%20insatur%C3%A9
masculine noun
Record 5, Textual support, French
Record number: 5, Textual support number: 1 OBS
composé aliphatique : composé organique renfermant une chaîne ouverte, comme les corps gras. 3, record 5, French, - compos%C3%A9%20aliphatique%20non%20satur%C3%A9
Record number: 5, Textual support number: 2 OBS
voir fiches "composé aliphatique" et "composé non saturé". 2, record 5, French, - compos%C3%A9%20aliphatique%20non%20satur%C3%A9
Record 5, Spanish
Record 5, Textual support, Spanish
Record 6 - internal organization data 1999-02-11
Record 6, English
Record 6, Subject field(s)
- Chemistry
Record 6, Main entry term, English
- unsaturation
1, record 6, English, unsaturation
correct
Record 6, Abbreviations, English
Record 6, Synonyms, English
Record 6, Textual support, English
Record number: 6, Textual support number: 1 DEF
Of a chemical compound, the state in which not all the available valence bonds along the alkyl chain are satisfied; in such compounds the extra bonds usually form double or triple bonds(chiefly with carbon). Thus unsaturated compounds are more reactive than saturated compounds, as other elements readily add to the unsaturated linkage. An unsaturated compound... has fewer hydrogen atoms or equivalent groups than the corresponding saturated compound.... 1, record 6, English, - unsaturation
Record 6, French
Record 6, Domaine(s)
- Chimie
Record 6, Main entry term, French
- insaturation
1, record 6, French, insaturation
correct, feminine noun
Record 6, Abbreviations, French
Record 6, Synonyms, French
Record 6, Textual support, French
Record number: 6, Textual support number: 1 DEF
Caractère des composés organiques non saturés et, par extension, des fonctions organiques, telles que liaisons multiples, ou particularité structurale, telle que cycle, qui font qu'une molécule ne contient pas le nombre maximal d'atomes d'hydrogène compatibles avec le nombre des atomes présents de carbone, azote, oxygène, etc. 1, record 6, French, - insaturation
Record 6, Spanish
Record 6, Textual support, Spanish
Record 7 - internal organization data 1999-02-11
Record 7, English
Record 7, Subject field(s)
- Chemistry
Record 7, Main entry term, English
- saturated aliphatic
1, record 7, English, saturated%20aliphatic
correct
Record 7, Abbreviations, English
Record 7, Synonyms, English
- saturated aliphatic compound 2, record 7, English, saturated%20aliphatic%20compound
correct
Record 7, Textual support, English
Record number: 7, Textual support number: 1 OBS
aliphatic: one of the major groups of organic compounds characterized by straight- or branched-chain arrangement of the constituent carbon atoms. Aliphatic hydrocarbons are comprised of three subgroups: (1) paraffins (alkanes), all of which are saturated and comparatively unreactive, ...(2) olefins (alkenes or alkadienes) which are unsaturated and quite reactive; (3) acetylenes (alkynes) which contain a triple bond and are highly reactive. 3, record 7, English, - saturated%20aliphatic
Record number: 7, Textual support number: 2 OBS
See records "aliphatic" and "saturated compound". 2, record 7, English, - saturated%20aliphatic
Record number: 7, Textual support number: 3 OBS
unsaturated aliphatic compound. 4, record 7, English, - saturated%20aliphatic
Record 7, French
Record 7, Domaine(s)
- Chimie
Record 7, Main entry term, French
- composé aliphatique saturé
1, record 7, French, compos%C3%A9%20aliphatique%20satur%C3%A9
correct, masculine noun
Record 7, Abbreviations, French
Record 7, Synonyms, French
Record 7, Textual support, French
Record number: 7, Textual support number: 1 OBS
composé aliphatique : composé organique renfermant une chaîne ouverte, comme les corps gras. 2, record 7, French, - compos%C3%A9%20aliphatique%20satur%C3%A9
Record number: 7, Textual support number: 2 OBS
voir fiches "composé aliphatique" et "composé saturé". 3, record 7, French, - compos%C3%A9%20aliphatique%20satur%C3%A9
Record 7, Spanish
Record 7, Textual support, Spanish
Record 8 - internal organization data 1999-02-09
Record 8, English
Record 8, Subject field(s)
- Chemistry
Record 8, Main entry term, English
- unsaturated compound
1, record 8, English, unsaturated%20compound
correct
Record 8, Abbreviations, English
Record 8, Synonyms, English
Record 8, Textual support, English
Record number: 8, Textual support number: 1 DEF
Any chemical compound with more than one bond between adjacent atoms, usually carbon, and thus reactive toward the addition of other atoms at that point; for example, olefins, diolefins, and unsaturated fatty acids. 1, record 8, English, - unsaturated%20compound
Record 8, French
Record 8, Domaine(s)
- Chimie
Record 8, Main entry term, French
- composé non saturé
1, record 8, French, compos%C3%A9%20non%20satur%C3%A9
correct, masculine noun
Record 8, Abbreviations, French
Record 8, Synonyms, French
- composé insaturé 2, record 8, French, compos%C3%A9%20insatur%C3%A9
masculine noun
Record 8, Textual support, French
Record number: 8, Textual support number: 1 CONT
insaturation : Caractère des composés organiques non saturés et, par extension, des fonctions organiques, telles que liaisons multiples, ou particularité structurale, telle que cycle, qui font qu'une molécule ne contient pas le nombre maximal d'atomes d'hydrogène compatibles avec le nombre des atomes présents de carbone, azote, oxygène, etc. 3, record 8, French, - compos%C3%A9%20non%20satur%C3%A9
Record number: 8, Textual support number: 1 OBS
unsaturated : insaturé, non saturé. 4, record 8, French, - compos%C3%A9%20non%20satur%C3%A9
Record number: 8, Textual support number: 2 OBS
insaturé : Chim. org. Non saturé. (Un hydrocarbure insaturé peut accepter plus ou moins facilement l'addition d'atomes d'hydrogène pour se transformer en hydrocarbure saturé.) 3, record 8, French, - compos%C3%A9%20non%20satur%C3%A9
Record 8, Spanish
Record 8, Textual support, Spanish
Record 9 - internal organization data 1985-03-20
Record 9, English
Record 9, Subject field(s)
- Chemistry
- Chemical Elements and Compounds
Record 9, Main entry term, English
- polyene
1, record 9, English, polyene
correct
Record 9, Abbreviations, English
Record 9, Synonyms, English
- multiene 2, record 9, English, multiene
Record 9, Textual support, English
Record number: 9, Textual support number: 1 DEF
Any unsaturated aliphatic or alicyclic compound containing more than four carbon atoms in the chain and having at least two double bonds. 3, record 9, English, - polyene
Record 9, French
Record 9, Domaine(s)
- Chimie
- Éléments et composés chimiques
Record 9, Main entry term, French
- polyène
1, record 9, French, poly%C3%A8ne
correct, masculine noun
Record 9, Abbreviations, French
Record 9, Synonyms, French
Record 9, Textual support, French
Record number: 9, Textual support number: 1 DEF
Nom générique des hydrocarbures renfermant plusieurs doubles liaisons carbone-carbone. 2, record 9, French, - poly%C3%A8ne
Record 9, Spanish
Record 9, Textual support, Spanish
Record 10 - internal organization data 1979-12-12
Record 10, English
Record 10, Subject field(s)
- Chemical Elements and Compounds
Record 10, Main entry term, English
- hydrogenatable
1, record 10, English, hydrogenatable
correct
Record 10, Abbreviations, English
Record 10, Synonyms, English
Record 10, Textual support, English
Record number: 10, Textual support number: 1 CONT
[The] hydrogenation coulometer (...) is usable in analysis mainly for selective detection and determination of hydrogenatable species (...) 1, record 10, English, - hydrogenatable
Record number: 10, Textual support number: 1 OBS
hydrogenation : The chemical reaction of hydrogen with another substance, generally an unsaturated organic compound, and usually under the influence of temperature, pressure, and catalysts. 2, record 10, English, - hydrogenatable
Record 10, French
Record 10, Domaine(s)
- Éléments et composés chimiques
Record 10, Main entry term, French
- hydrogénable
1, record 10, French, hydrog%C3%A9nable
correct
Record 10, Abbreviations, French
Record 10, Synonyms, French
Record 10, Textual support, French
Record number: 10, Textual support number: 1 DEF
Apte à subir une hydrogénation. 2, record 10, French, - hydrog%C3%A9nable
Record number: 10, Textual support number: 1 CONT
L'idée de principe consiste à transférer l'hydrogène contenu dans un hydrure métallique approprié à un substrat organique hydrogénable qui est mis au contact de cet hydrure. 3, record 10, French, - hydrog%C3%A9nable
Record 10, Spanish
Record 10, Textual support, Spanish
Copyright notice for the TERMIUM Plus® data bank
© Public Services and Procurement Canada, 2026
TERMIUM Plus®, the Government of Canada's terminology and linguistic data bank
A product of the Translation Bureau
Features
GCtranslate (available on the Government of Canada network only)
Use this artificial intelligence prototype to translate Government of Canada content up to and including Protected B. Available to employees of selected departments and agencies only.
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:


