TERMIUM Plus®

From: Translation Bureau

On social media

Consult the Government of Canada’s terminology data bank.

URANIO-238 [2 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 - external organization data 2012-04-25

English

Subject field(s)
  • Chemical Elements and Compounds
  • Radioactive Ores (Mining)
  • Compartment - Canadian Nuclear Safety Commission
Universal entry(ies)
238U
symbol, see observation
U1
symbol
UI
symbol
U I
symbol
DEF

The most common isotope of uranium, having mass number 238 and half-life 4.46 x 109 years, nonfissionable but irradiated with neutrons to produce fissionable plutonium 239.

OBS

It will be used in breeder reactors, together with plutonium, where its energy potential will be exploited by transmuting it to fissionable plutonium.

OBS

symbol: 238U. The number 238 is a superscript.

OBS

In the symbol U1 (or UI), the number 1 (or I) is a subscript.

OBS

uranium-238;238U: term and symbol recommended by the International Union of Pure and Applied Chemistry (UIPAC).

French

Domaine(s)
  • Éléments et composés chimiques
  • Minerais radioactifs (Mines métalliques)
  • Tiroir - Commission canadienne de sûreté nucléaire
Entrée(s) universelle(s)
238U
symbol, see observation
U1
symbol
UI
symbol
U I
symbol
DEF

Isotope de l'uranium le plus abondant dans l'uranium naturel (plus de 99 %), permettant de produire le plutonium.

CONT

Les réacteurs conventionnels utilisent un mélange d'isotopes rares d'uranium-235 et d'isotopes plus communs d'uranium-238. L'uranium-235 n'est présent que pour 1 % dans l'uranium naturel et son extraction est coûteuse. Lorsqu'un atome d'uranium-235 absorbe un neutron, il se casse en éléments plus légers en libérant de l'énergie et deux ou trois neutrons.

OBS

Émetteur alpha de 4,2 MeV de période 4,5 X 109 ans, il est le père de la famille de l'uranium. Ancienne appellation : Uranium I.

OBS

Symbole : 238U. Le chiffre 238 est en exposant.

OBS

uranium-238;238U : terme et symbole recommandés par l'Union internationale de chimie pure et appliquée (UICPA).

Spanish

Campo(s) temático(s)
  • Elementos y compuestos químicos
  • Minerales radioactivos (Minas metálicas)
  • Compartimiento - Comisión Canadiense de Seguridad Nuclear
Entrada(s) universal(es)
238U
symbol, see observation
U1
symbol
UI
symbol
U I
symbol
Save record 1

Record 2 - external organization data 2007-10-17

English

Subject field(s)
  • Atomic Physics
  • Compartment - Canadian Nuclear Safety Commission
  • CBRNE Weapons
DEF

Material containing one or more fissile (or, rarely fissionable, for example, 238 Pu) nuclides, and capable of being made critical under appropriate conditions. [Definition standardized by ISO.]

DEF

Any material fissionable by thermal (slow) neutrons.

OBS

... plutonium 238, plutonium 239, plutonium 241, uranium 233, uranium 235, or any material containing any of the foregoing, but does not include unirradiated natural uranium or depleted uranium.

OBS

fissile: sometimes used specifically of materials capable of fission upon absorption of a slow (as opposed to a fast) neutron.

OBS

Not to be confused with "active material", which means "A material capable of releasing substantial quantities of nuclear energy during fission".

OBS

fissile material: term standardized by ISO.

French

Domaine(s)
  • Physique atomique
  • Tiroir - Commission canadienne de sûreté nucléaire
  • Armes CBRNE
DEF

Matière contenant un ou plusieurs nucléides fissiles (ou rarement fissionnables, par exemple 238 Pu) et pouvant devenir critique dans certaines conditions. [Définition normalisée par l'ISO.]

CONT

fissile : Susceptible de subir la fission nucléaire. [...] Aux termes des règlements sur les transports de matières radioactives, on entend par matières fissiles : l'uranium 233, l'uranium 235, le plutonium 238, le plutonium 239 et le plutonium 241.

OBS

matière fissile : terme normalisé par l'ISO.

Spanish

Campo(s) temático(s)
  • Física atómica
  • Compartimiento - Comisión Canadiense de Seguridad Nuclear
  • Armas QBRNE
DEF

Material susceptible de ser fisionado fácilmente cuando es bombardeado por neutrones.

CONT

El uranio-235 y el plutonio-239 son los materiales físiles normalmente utilizados en la producción de explosivos nucleares. Otros materiales físiles potencialmente utilizables incluyen el uranio-233, el americio, el neptunio y otros isótopos del plutonio.

OBS

No confundir con "material fisionable".

OBS

material fisionable : Material susceptible de ser fisionado cuando es bombardeado por neutrones o fotones de la energía apropiada. El uranio-238, por ejemplo, es fisionable pero no físil.

Save record 2

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

Display options

Change the order of display of the official languages of Canada
Option to display the non-official languages (Spanish or Portuguese)
Display definitions, contexts, etc., on records

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: