atomic mass unit Meaning in the Cambridge English Dictionary Cambridge dictionaries logo

Meaning of “atomic mass unit” in the English Dictionary

"atomic mass unit" in British English

See all translations

atomic mass unitnoun [C]

uk   us   (abbreviation u) specialized
a ​unit used for ​measuringatomicmass, ​equal to one twelfth of the ​mass of an ​atom of ​carbon in ​itscommonestform, carbon-12
(Definition of atomic mass unit from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"atomic mass unit" in American English

See all translations

atomic mass unitnoun [C]

 us   /əˈtɑm·ɪk ˈmæs ˌju·nɪt/
chemistry, physics one-twelfth the mass of one ​atom of ​carbon
(Definition of atomic mass unit from the Cambridge Academic Content Dictionary © Cambridge University Press)
What is the pronunciation of atomic mass unit?
Add Cambridge dictionaries to your browser to your website
Word of the Day

new wave

people who are doing activities in a new and different way

Word of the Day

Chest pains and palpitations: talking about illness (2)
Chest pains and palpitations: talking about illness (2)
by Liz Walter,
February 03, 2016
My previous post (My leg hurts: Talking about illness (1)) presented some general vocabulary to use at the doctor’s. This one looks at some more specific areas of illness and explains some useful words and phrases that you may need to use or understand on a visit to the doctor’s. There are several

Read More 

awesomesauce noun
awesomesauce noun
February 01, 2016
slang the state of being extremely good or enjoyable or something or someone that is extremely good or enjoyable Recovering from the awesomesauce of another fab #Vidcon!!

Read More