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promethium

pro·me·thi·um
P p

Transcription

    • US Pronunciation
    • US IPA
    • [pruh-mee-thee-uh m]
    • /prəˈmi θi əm/
    • US Pronunciation
    • US IPA
    • [pruh-mee-thee-uh m]
    • /prəˈmi θi əm/

Definitions of promethium word

  • noun promethium a rare-earth, metallic, trivalent element. Symbol: Pm; atomic number: 61. 1
  • noun promethium a radioactive element of the lanthanide series artificially produced by the fission of uranium. Symbol: Pm; atomic no: 61; half-life of most stable isotope, 145Pm: 17.7 years; valency: 3; melting pt: 1042°C; boiling pt: 2460°C (approx.) 0
  • noun promethium a radioactive chemical element, one of the rare-earth elements, obtained from fission of uranium or neutron bombardment of neodymium and used in phosphorescent paint, as a power source, X-ray source, etc.: symbol, Pm; at. no., 61 0
See all 3 definitions of promethium

Information block about the term

Origin of promethium

First appearance:

before 1945
One of the 6% newest English words
From New Latin, dating back to 1945-50; See origin at Prometheus, -ium

Historical Comparancy

Parts of speech for Promethium

noun
adjective
verb
adverb
pronoun
preposition
conjunction
determiner
exclamation
Full grammatical hierarchy of Promethium

promethium popularity

A pretty common term. Usually people know it’s meaning, but prefer to use a more spread out synonym. About 46% 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.

promethium usage trend in Literature

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Related words

All related words to promethium

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