Did you know?

Click any word in a definition or example to find the entry for that word

British pronunciation of 

atomic number

British English pronunciation: atomic number
Click to listen to the pronunciation of atomic number

This is the British English pronunciation of atomic number.

View American English pronunciation of atomic number.

Previous and next
BuzzWord

moto-doping

in competitive cycling, the illegal use of motors on bikes in order to gain advantage over other riders

BuzzWord Article

Open Dictionary

unhappen

be reversed; be as if it had never happened

add a word

Blog

A must for anyone with an interest in the changing face of language. The Macmillan Dictionary blog explores English as it is spoken around the world today.

global English and language change from our blog
Macmillan learn live love play