ir-

¹

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

ir-

²

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

Ir

³

abbreviation for

1. Irish ( def 4 ).

Ir

⁴

Symbol, Chemistry.

1. iridium.

IR

⁵

abbreviation for

1. infrared.
2. Football, Ice Hockey. injured reserve ( def ):

   Ending up on the IR so close to the end of the regular season may keep him off the ice for the entire Stanley Cup playoffs.

3. intelligence ratio.
4. information retrieval ( def ).

Ir.

⁶

abbreviation for

1. Ireland.
2. Irish.

I.R.

⁷

abbreviation for

1. immediate reserve.
2. infantry reserve.
3. intelligence ratio.
4. internal revenue.

Ir.

¹

abbreviation for

1. Ireland
2. Irish

ir

²

the internet domain name for

1. Iran

Ir

³

the chemical symbol for

1. iridium

ir-

⁴

prefix

1. See in-
   a variant of in- 1 in- 2

IR

⁵

abbreviation for

1. infrared
2. (formerly, in Britain) Inland Revenue
3. Iran (international car registration)