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.

Referring to the periodic table, the atomic mass of K is 39.10 amu, and so its molar mass is 39.10 g/mol.

From Textbooks • Feb. 14, 2019

The principal component of mothballs is naphthalene, a compound with a molecular mass of about 130 amu, containing only carbon and hydrogen.

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

The mass of a certain chlorine atom is 35 amu.

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