| Ir The symbol for the element iridium. |
| IR abbr. 1. information retrieval 2. infrared |
ir
(Electronics & Computer Science / Computer Science)
the Internet domain name for Iran
Ir
the chemical symbol for
(Chemistry / Elements & Compounds) iridium
IR
abbreviation for
1. (Physics / General Physics) infrared
2. (Government, Politics & Diplomacy) (in Britain) Inland Revenue
3. (Government, Politics & Diplomacy)
international car registration for Iran
| Ir The symbol for iridium. |
ThesaurusLegend: Synonyms Related Words Antonyms
| Noun | 1. |  Ir - a heavy brittle metallic element of the platinum group; used in alloys; occurs in natural alloys with platinum or osmiummetal, metallic element - any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc. |
| 2. | IR - a board of the British government that administers and collects major direct taxes administrative body, administrative unit - a unit with administrative responsibilities Britain, Great Britain, U.K., UK, United Kingdom, United Kingdom of Great Britain and Northern Ireland - a monarchy in northwestern Europe occupying most of the British Isles; divided into England and Scotland and Wales and Northern Ireland; `Great Britain' is often used loosely to refer to the United Kingdom |
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