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• Ir
  Ir

  abbreviation

  Irish.
• IR
  IR

  abbreviation

  infrared.
• ir-
  ir-

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

  abbreviation

  Ireland.
• I.R.
  I.R.

  abbreviation

  immediate reserve.
• ir
  ir

  abbreviation

  Iran

Ir

¹ American  

abbreviation

1. Irish.

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Ir ² American  

Symbol, Chemistry.

1. iridium.

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IR ³ American  

abbreviation

1. infrared.

2. Football, Ice Hockey. injured reserve.

   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.

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ir- ⁴ American  

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

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ir- ⁵ American  

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

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Ir. ⁶ American  

abbreviation

1. Ireland.

2. Irish.

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I.R. ⁷ American  

abbreviation

1. immediate reserve.

2. infantry reserve.

3. intelligence ratio.

4. internal revenue.

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IR ¹ British  

abbreviation

1. infrared

2. (formerly, in Britain) Inland Revenue

3. Iran (international car registration)

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Ir. ² British  

abbreviation

1. Ireland

2. Irish

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Ir ³ British  

symbol

1. iridium

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ir- ⁴ British  

prefix

1. a variant of in- 1 in- 2

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ir ⁵ British  

abbreviation

1. Iran

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Example Sentences

Baden-Baden received the Mayor with flags and cheering, despite the immediate outcropping of his ir- repressible tendency to jest�this time a decision that the town "ought to be called Good & Gooder."

From Time Magazine Archive

This prefix thus appears as en-, i-, il-, im-, in-, ir-, as enemy, ignoble, illegal, immortal, infirm, irregular.

From Chambers's Twentieth Century Dictionary (part 4 of 4: S-Z and supplements) by Various

It becomes il- before l; im- before b, m, and p; ir- before r.

From Chambers's Twentieth Century Dictionary (part 4 of 4: S-Z and supplements) by Various

During all this time the pris- 431:6 oner attended to his daily labors, partaking of food at ir-         regular intervals, sometimes going to sleep immediately         after a heavy meal.

From Science and Health, with Key to the Scriptures by Eddy, Mary Baker

NOTE.—The forms il-, im-, and ir- are euphonic variations of in-.

From New Word-Analysis Or, School Etymology of English Derivative Words by Swinton, William