Transcription
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- US Pronunciation
- US IPA
- UK Pronunciation
- UK IPA
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- [see-zee-uh m]
- /ˈsi zi əm/
- /ˈsiː.zi.əm/
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- US Pronunciation
- US IPA
-
- [see-zee-uh m]
- /ˈsi zi əm/
Definitions of caesium word
- noun caesium a ductile silvery-white element of the alkali metal group that is the most electropositive metal. It occurs in pollucite and lepidolite and is used in photocells. The radioisotope caesium-137, with a half-life of 30.2 years, is used in radiotherapy. Symbol: Cs; atomic no: 55; atomic wt: 132.90543; valency: 1; relative density: 1.873; melting pt: 28.39±0.01°C; boiling pt: 671°C 3
- abbreviation CAESIUM cesium 3
- noun caesium a rare, highly reactive, soft, metallic element of the alkali metal group, used chiefly in photoelectric cells. Symbol: Cs; atomic weight: 132.905; atomic number: 55; specific gravity: 1.9 at 20°C; melts at 28.5°C. 1
- noun caesium A metallic chemical element (symbol Cs) with an atomic number of 55. 1
Information block about the term
Origin of caesium
First appearance:
before 1930 One of the 10% newest English words
1930-35; < New Latin, special use of Latin caesium, neuter of caesius bluish-grey; see -ium
Historical Comparancy
Parts of speech for Caesium
noun
adjective
verb
adverb
pronoun
preposition
conjunction
determiner
exclamation
caesium popularity
A pretty common term. Usually people know it’s meaning, but prefer to use a more spread out synonym. About 68% of English native speakers know the meaning and use word.
This word is included in each student's vocabulary. Most likely there is at least one movie with this word in the title.
caesium usage trend in Literature
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- how does caesium react with water?
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- why do caesium and barium have different atomic numbers?
See also
Matching words
- Words starting with c
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- Words starting with caesium