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actinouranium

 - 4 dictionary results

ac⋅tin⋅o⋅u⋅ra⋅ni⋅um

  [ak-tin-oh-yoo-rey-nee-uhm, ak-tuh-noh-]
Use actinouranium in a Sentence
–noun Chemistry.
uranium 235.
Origin:
1925–30; actino- + uranium

uranium 235

 
–noun Chemistry.
the radioactive uranium isotope having a mass number of 235, comprising 0.715 percent of natural uranium. When bombarded with neutrons it undergoes fission with the release of energy.
Also called U-235, U 235, actinouranium.

Origin:
1935–40
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
Cite This Source Link To actinouranium
ac·ti·no·u·ra·ni·um   (āk'tə-nō-yŏŏ-rā'nē-əm)   
n.  The isotope of uranium with mass number 235, fissionable with slow neutrons.

[actin(ium) + uranium.]
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Medical Dictionary

Main Entry: uranium 235
Function: noun
: a light isotope of uranium of mass number 235 that when bombarded with slow neutrons undergoes rapid fission into smaller atomswith the release of neutrons and atomic energy
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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