atomic number
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Related to atomic number: Isotopes, atomic weight
atomic number
n. Symbol Z Abbr. at. no.
The number of protons in an atomic nucleus.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
atomic number
n
(General Physics) the number of protons in the nucleus of an atom of an element. Abbreviation: at. no. Symbol: Z Also called: proton number
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
atom′ic num′ber
n.
the number of protons in the nucleus of an atom of a given element, used to locate the element in the periodic table. Abbr.: at. no.; Symbol: Z
[1815–25]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
atomic number
The number of protons in the nucleus of an atom. In electrically neutral atoms, this number is also equal to the number of electrons orbiting about the atom's nucleus. The atomic number of an element determines its position in the Periodic Table.
The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
atomic number
1. Or proton number (Z) The number of protons in the nucleus of an atom. If not electrically charged, this is equal to the number of electrons in its shells.
2. The number of protons in the nucleus of an atom.
Dictionary of Unfamiliar Words by Diagram Group Copyright © 2008 by Diagram Visual Information Limited
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Noun | 1. | ![]() number - a concept of quantity involving zero and units; "every number has a unique position in the sequence" magic number - the atomic number of an extra stable strongly bound atomic nucleus: 2, 8, 20, 28, 50, 82 or 126 |
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Translations
atomové číslo
原子番号
atoomnummer
atomnummer
原子序
atomic number
n (Chem) → numero atomicoCollins Italian Dictionary 1st Edition © HarperCollins Publishers 1995