IR
noun, adjective
IR is spelled I-R: 2 letters. It appears 4.8 times per million words in written English, the 11,541st most frequent word form (wordfreq, 2021 data). As a noun, IR means “Initialism of inertial reference” (English Wiktionary, September 2026). The plural of IR is IRs.
How many letters and syllables are in IR?
| Letters | 2: I-R |
|---|---|
| In writing | 4.8 times per million words; the 11,541st most frequent word form |
| Wrong spellings searched | none measured in search |
Sources: letters and syllables from the English Wiktionary's hyphenation or pronunciation; written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).
How common is IR?
IR appears 4.8 times per million words in written English, the 11,541st most frequent word form in the list.
Source: written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).
Forms of IR
- IRs plural
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
What does IR mean?
The meanings the English Wiktionary records, quoted as written there (source below).
noun
- 1
Initialism of inertial reference.
The pilot checked the IR system before takeoff.
- 2
Initialism of industrial relations.
She is studying IR as part of her business degree.
- 3
Initialism of investor relations.
The company’s IR team held a quarterly earnings call.
- 4
Initialism of information retrieval.
Search engines rely on advanced IR techniques.
- 5
Initialism of intermediate representation.
The compiler translated the code into LLVM IR.
- 6
Initialism of incident report.
The officer filed an IR after the accident.
- 7
Initialism of immediate release.
The doctor prescribed an IR tablet for quick pain relief.
- 8
Abbreviation of infrared.
The camera detects IR light beyond the visible spectrum.
adjective
- 1
Initialism of interracial.
The site featured an IR category for interracial content.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Where does IR come from?
From Latin ir-, assimilated form of in- used before r-.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).