Ir


abbreviation

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Definition for Ir (2 of 7)

Ir

Symbol, Chemistry.

iridium.

Definition for Ir (3 of 7)

IR

intelligence ratio.
information retrieval.

Definition for Ir (4 of 7)

ir-1

variant of in-2 (by assimilation) before r: irradiate.

Definition for Ir (5 of 7)

ir-2

variant of in-3 (by assimilation) before r: irreducible.

Definition for Ir (6 of 7)

Ir.

Ireland.
Irish.

Definition for Ir (7 of 7)

I.R.

immediate reserve.
infantry reserve.
intelligence ratio.
internal revenue.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

British Dictionary definitions for Ir (1 of 5)

ir

the internet domain name for

Iran

British Dictionary definitions for Ir (2 of 5)

Ir

the chemical symbol for

iridium

British Dictionary definitions for Ir (3 of 5)

IR

abbreviation for

infrared
(formerly, in Britain) Inland Revenue
Iran (international car registration)

British Dictionary definitions for Ir (4 of 5)

ir-

prefix

a variant of in- 1, in- 2

British Dictionary definitions for Ir (5 of 5)

Ir.

abbreviation for

Ireland
Irish
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medical definitions for Ir (1 of 3)

ir- 22

pref.

Variant ofin-2

Medical definitions for Ir (2 of 3)

ir- 11

pref.

Variant ofin-1

Medical definitions for Ir (3 of 3)

Ir

The symbol for the elementiridium
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Scientific definitions for Ir

Ir

The symbol for iridium.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.