| 单词 | atomic mass |
| 释义 | atomic massSEE SYNONYMS FOR atomic mass ON THESAURUS.COM noun Chemistry.the mass of an isotope of an element measured in units formerly based on the mass of one hydrogen atom taken as a unit or on 1/16 (0.0625) the mass of one oxygen atom, but after 1961 based on 1/12 (0.0833) the mass of the carbon-12 atom. Origin of atomic massFirst recorded in 1895–1900 Words nearby atomic massAtomic Energy Commission, atomic force microscope, atomic heat, atomic hydrogen, atomicity, atomic mass, atomic mass unit, atomic number, atomic pile, atomic power, atomics Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 British Dictionary definitions for atomic massatomic mass noun chemthe mass of an isotope of an element in atomic mass units short for relative atomic mass See atomic weight Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 Medical definitions for atomic massatomic mass n.The mass of an atom, usually expressed in atomic mass units. The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company. Scientific definitions for atomic massatomic mass The mass of a given atom or molecule, expressed in atomic mass units. Compare atomic weight. See also mass number. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved. |
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