mass number

mass number

n.

The sum of the number of neutrons and protons in an atomic nucleus. Also called nucleon number.

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.

mass number

n

(Atomic Physics) the total number of neutrons and protons in the nucleus of a particular atom. Symbol: A Also called: nucleon number

Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

mass′ num`ber

n.

the number of nucleons in an atomic or isotopic nucleus. Symbol: A

[1920–25]

Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.

mass number

The total number of protons and neutrons in the nucleus of an atom. For example, nitrogen has 7 protons and 7 neutrons in its nucleus, giving it a mass number of 14.

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.

mass number

1. The total number of protons and neutrons (nucleons) in the nucleus of an atom.

2. The number of nucleons (protons and neutrons) in the nucleus of an atom.

Dictionary of Unfamiliar Words by Diagram Group Copyright © 2008 by Diagram Visual Information Limited

Thesaurus

Noun

1.

mass number - the sum of the number of neutrons and protons in an atomic nucleus nucleon number mass unit - a unit of measurement for mass

Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.

Translations

Massenzahl

mass number

n (Phys) → numero di massa

Collins Italian Dictionary 1st Edition © HarperCollins Publishers 1995