HDR
"hdr" is a 3-letter English headword indexed on PlainSpell.
The verdict
“HDR” sits in 20 confusable pairs (corpus #27,489) as a noun. The look-alike neighbours are the real trap.
- #27,489
- frequency rank, English
- 2,646
- “H” headwords
- 20
- confusable pairs
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Initialism of hot dry rock.
Corpus desk
Index EN-hdr · HDR · English
HDR · rank #27,489 · 0 variants · 20 confusables
- FREQ-MID #27,489
- LEN-MID 3 letters
- VOW-0 0 vowels
- CONFUS-HIGH 20 pairs
- VAR-0 0 variants
- BOOK-MID 2,646
- PHOTO-FINISH HDD
Nearest frequency peer: HDD (-1 rank slots)
Read with this headword: Spelling guide for this pattern
Desk codes from Wiktionary headword shape, FrequencyWords rank tier, confusable-pair count, generated misspelling depth, letter-cohort book size, and photo-finish peer. Not a difficulty grade.
Frequency neighbours of confusable “HDR”
Peers at similar corpus weight, separate from look-alike pairs below
- hap
hap
72,515 corpus weight
- Hatfield
Hatfield
72,514 corpus weight
- HDD
HDD
72,513 corpus weight
- HDR
HDR
72,512 corpus weight
- headway
headway
72,511 corpus weight
- hearsay
hearsay
72,510 corpus weight
What this shows Bars place “HDR” against nearest ranked English headwords, not a reprint of the confusable-pair desk.
Visual similarity to commonly confused words
How many letter changes separate each confused pair (Levenshtein distance, normalized).
Source: PlainSpell confusable corpus (Wiktionary, CC BY-SA).
| Property | Value |
|---|---|
| Headword | HDR |
| Language | English |
| Part of speech | Noun |
| Letters | 3 |
| Frequency rank | #27,489 |
| Misspellings tracked | 0 |
| Confusable pairs | 20 |
| Source | Wiktionary (kaikki.org) |
Corpus rank beside confusables of “HDR”
Easy to mix with look-alikes
The spelling risk for HDR is neighbouring look-alikes ("he", "hi", …), not just typos; it is anoun. Frequency #27,489 among 2,646 “H” headwords. 4 recorded senses keep meaning in play.
No misspelling variants are generated for HDR in our index, typically a sign the spelling maps closely to how the word sounds. It also participates in 20 confusable-pair relationships, "he", "hi", "ho", and more, where similar look or sound leads writers to substitute one word for another in context.
Etymologically, the entry records: Abbreviation. The correct English form is HDR, spelled H-D-R.
Definition
- 1Initialism of hot dry rock.
- 2Initialism of humanitarian daily ration.
- 3Initialism of high dynamic range.
- 4Initialism of hard disk recorder or hard drive recorder (“a recording device that records onto a hard disk drive”).
Etymology
Abbreviation.
Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA); frequency ordering uses the FrequencyWords open word-frequency list (2018 English corpus, MIT). See the methodology for how each field is sourced and updated.
Frequently Asked Questions
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Similar English words by spelling shape
Same letter count and similar misspelling depth for "HDR", not the corpus desk frequency band.
Same letter count
Frequency-ranked English headwords with 3 letters (nearest by frequency rank).