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amu

American

Or AMU

abbreviation

atomic mass unit.

AMU ¹ British

abbreviation

Associated Metalworkers Union

"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

amu ² British

abbreviation

atomic mass unit

"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

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Electrons are light particles with a charge of 1− and a mass of 0.00055 amu.

From Textbooks • Feb. 14, 2019

The mass of the atom is 22.9898 amu.

From Textbooks • Feb. 14, 2019

A neutron is a slightly heavier particle with a mass 1.0087 amu and a charge of zero; as its name suggests, it is neutral.

From Textbooks • Feb. 14, 2019

If the compound’s molecular mass is determined to be 180 amu, this indicates that molecules of this compound contain six times the number of atoms represented in the empirical formula:

From Textbooks • Feb. 14, 2019

U. 'alu. alua, dehortative, no! don't! alua fasi, wait a while! alula v. n. putting, becoming. alualu v. i. bae alualu, to promise. aluga partic. unloosed. luga. amu 1. poss. sing.

From Grammar and Vocabulary of the Lau Language, Solomon Islands by Ivens, W. G. (Walter George)

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023