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IQ abbreviation of "intelligence quotient," a representation of mental age as determined by intelligence tests.
Ir symbol of the chemical element iridium.
ir-1 in; into. [2 definitions]
ir-2 not; without.
IRA abbreviation of "Individual Retirement Account."
I.R.A. abbreviation of "Irish Republican Army."
Iran a Middle Eastern country between Turkmenistan, the Caspian Sea, and the Persian Gulf.
Iranian of or pertaining to Iran or its people, culture, or the like; Persian. [4 definitions]
Iraq a Middle Eastern country between Syria and Iran.
Iraqi a native or citizen of Iraq, or a descendant thereof. [3 definitions]
irascible easily angered or irritated; short-tempered. [2 definitions]
irate very angry; furious or indignant. [2 definitions]
IRBM abbreviation of "intermediate range ballistic missile."
ire anger or wrath.
Ireland an island west of Great Britain. [2 definitions]
Irene in Greek mythology, the goddess personifying peace; Pax.
irenic tending to promote peace; peaceful; conciliatory.
iridescent emitting or reflecting a lustrous play of colors covering the spectrum, like a rainbow. [2 definitions]
iridium a chemical element that has seventy-seven protons in each nucleus and that occurs as a lustrous yellowish white, extremely hard, dense, and corrosion-resistant metal, used as a hardening alloy, esp. with precious metals. (symbol: Ir)
iris the colored, round membrane surrounding the pupil of the eye. [2 definitions]
Irish of or pertaining to Ireland or its people, culture, language, or the like. [3 definitions]