Definition of IW in English:

IW

Syllabification: IW

abbreviation

1Index word.
1.1Isotopic weight.

Get more from Oxford Dictionaries

Subscribe to remove adverts and access premium resources

Word of the day oleaginous
Pronunciation: ˌəʊlɪˈadʒɪnəs
adjective
rich in, covered with, or producing oil; oily