Reference meaning
Ir
Last updated
a heavy brittle metallic element of the platinum group; used in alloys; occurs in natural alloys with platinum or osmium
Related source terms
iridiumatomic number 77
Other meanings
2. noun
a board of the British government that administers and collects major direct taxes
Source and scope
This definition is reproduced from Princeton WordNet 3.0, sense 14642219-n, under the WordNet 3.0 License. It has not yet received VocabularyBase editorial review. Read the source and license details.