TERMIUM Plus^®

Record 1,  Textual support,  English

Record number: 1, Textual support number: 1 DEF

In nuclear science, one of two or more nuclides with the same numbers of neutrons and protons in the nucleus, but having different energy.  2, record 1, English, - isomer

Record 1,  Textual support,  French

Record number: 1, Textual support number: 1 DEF

L'un des nucléides isomères d'un élément donné.  2, record 1, French, - isom%C3%A8re

Record 1,  Textual support,  Spanish

Record number: 1, Textual support number: 1 DEF

Núclidos con los mismos números atómicos y de masa, aunque existen en diferentes estados de energía.  2, record 1, Spanish, - is%C3%B3mero

Record 2,  Textual support,  English

Record number: 2, Textual support number: 1 DEF

One of two or more molecules having the same number and kind of atoms and hence the same molecular weight, but differing in respect to the arrangement or configuration of the atoms. Butanol (C₄ H₉ OH or C₄ H₁₀ O) and ethyl ether (C₂ H₅ OC₂ H₅ or C₄ H₁₀ O) have the same empirical formulas but are entirely different kinds of substances; normal butanol ... and isobutanol ... are the same kinds of substances, differing chiefly in the shape of the molecules ...  2, record 2, English, - isomer

Record number: 2, Textual support number: 1 OBS

isomer: usually used in the plural (isomers).  3, record 2, English, - isomer

Record 2,  Textual support,  French

Record number: 2, Textual support number: 1 CONT

[...] on appelle isomères des substances distinctes et séparables, ayant même formule brute, c'est-à-dire même composition centésimale et même masse moléculaire.  2, record 2, French, - isom%C3%A8re

Record number: 2, Textual support number: 1 OBS

isomère : terme habituellement utilisé au pluriel (isomères).  3, record 2, French, - isom%C3%A8re

Record 2,  Textual support,  Spanish

Record number: 2, Textual support number: 1 DEF

Moléculas que contienen el mismo número y clase de átomos, aunque difieren en su estructura.  2, record 2, Spanish, - is%C3%B3mero