TERMIUM Plus®
The Government of Canada’s terminology and linguistic data bank.
TRANSIENT SPECIES [1 record]
Record 1 - internal organization data 2004-04-15
Record 1, English
Record 1, Subject field(s)
- Analytical Chemistry
Record 1, Main entry term, English
- transient species
1, record 1, English, transient%20species
correct
Record 1, Abbreviations, English
Record 1, Synonyms, English
- transient chemical species 1, record 1, English, transient%20chemical%20species
correct
Record 1, Textual support, English
Record number: 1, Textual support number: 1 DEF
A species occurring as a short-lived intermediate in a reaction occurring by a composite mechanism. 1, record 1, English, - transient%20species
Record number: 1, Textual support number: 1 OBS
transient (chemical) species: Relating to a short-lived reaction "intermediate." It can be defined only in relation to a time scale fixed by the experimental conditions and the limitations of the technique employed in the detection of the intermediate. The term is a relative one. 1, record 1, English, - transient%20species
Record number: 1, Textual support number: 2 OBS
Transient species are sometimes also said to be "metastable." However, this latter term should be avoided, because it relates a thermodynamic term to a kinetic property, although most transients are also thermodynamically "unstable" with respect to reactants and products. 1, record 1, English, - transient%20species
Record 1, French
Record 1, Domaine(s)
- Chimie analytique
Record 1, Main entry term, French
- espèce transitoire
1, record 1, French, esp%C3%A8ce%20transitoire
correct, feminine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
- espèce chimique transitoire 1, record 1, French, esp%C3%A8ce%20chimique%20transitoire
correct, feminine noun
Record 1, Textual support, French
Record number: 1, Textual support number: 1 DEF
Espèce rencontrée comme intermédiaire de courte durée de vie dans une réaction se produisant par un mécanisme composite. 1, record 1, French, - esp%C3%A8ce%20transitoire
Record number: 1, Textual support number: 1 OBS
espèce chimique transitoire : Qualifie un «intermédiaire réactionnel» de courte durée de vie moyenne. Le caractère transitoire ne peut être défini que par référence à un laps de temps; son ordre de grandeur dépend des conditions de l'expérience et des limites de détection de l'intermédiaire. Cette expression a aussi un sens relatif. 1, record 1, French, - esp%C3%A8ce%20transitoire
Record number: 1, Textual support number: 2 OBS
On dit quelquefois que les espèces transitoires sont «métastables». Toutefois, on devrait éviter ce dernier terme parce qu'il crée de la confusion entre un terme thermodynamique et une propriété cinétique, même si les espèces transitoires sont aussi thermodynamiquement «instables» par rapport aux réactifs et aux produits. 1, record 1, French, - esp%C3%A8ce%20transitoire
Record 1, Spanish
Record 1, Textual support, Spanish
Copyright notice for the TERMIUM Plus® data bank
© Public Services and Procurement Canada, 2024
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: