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Definition of Americium in English :

Define Americium in English

Americium meaning in English

Meaning of Americium in English

Pronunciation of Americium in English

Americium pronunciation in English

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Americium

see synonyms of americium

Noun

1. am, americium, atomic number 95

a radioactive transuranic metallic element; discovered by bombarding uranium with helium atoms

WordNet Lexical Database for English. Princeton University. 2010.

Americium

see synonyms of americium
noun
a white metallic transuranic element artificially produced from plutonium. It is used as an alpha-particle source. Symbol: Am; atomic no: 95; half-life of most stable isotope, 243Am: 7.4 × 103 years; valency: 2,3,4,5, or 6; relative density: 13.67; melting pt: 1176°C; boiling pt: 2607°C (est)

Collins English Dictionary. Copyright © HarperCollins Publishers

Americium

see synonyms of americium
noun
a radioactive, metallic chemical element, one of the actinides, produced by the beta decay of an isotope of plutonium: symbol, Am; at. no., 95
see the periodic table of elements in the Reference Supplement

Webster’s New World College Dictionary, 4th Edition. Copyright © 2010 by Houghton Mifflin Harcourt. All rights reserved.

Americium

see synonyms of americium
n. Symbol Am
A white metallic transuranic element of the actinide series, having isotopes with mass numbers from 232 to 247. Am-241 and Am-243 are the isotopes with the longest half-lifes (432.2 years and 7,370 years, respectively), and are alpha-ray and gamma-ray emitters used as radiation sources in research, radiography, and smoke alarms. Atomic number 95; melting point 1176°C; boiling point 2011°C; specific gravity 12; valence 3, 4, 5, 6. See Periodic Table.

The American Heritage ® Dictionary of the English Language, Fifth Edition copyright ©2018 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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