Synonyms of ir

Noun

1. iridium, Ir, atomic number 77, metallic element, metal

usage: a heavy brittle metallic element of the platinum group; used in alloys; occurs in natural alloys with platinum or osmium

2. Inland Revenue, IR, administrative unit, administrative body

usage: a board of the British government that administers and collects major direct taxes

Definition and meaning of ir (Dictionary)