Synonyms of ir
- 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
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Definition and meaning of ir (Dictionary)