UCR
"ucr" is a 3-letter English headword indexed on PlainSpell.
The verdict
“UCR” is uncommon English (frequency #67,915 among 1,433 “U” headwords), classed as a proper noun. The kind of spelling people second-guess.
- #67,915
- frequency rank, English
- 1,433
- “U” headwords
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Initialism of University of California, Riverside.
Corpus desk
Index EN-ucr · UCR · English
UCR · rank #67,915 · 0 variants · 0 confusables
- FREQ-RARE #67,915
- LEN-MID 3 letters
- VOW-1 1 vowel
- CONFUS-0 No pairs
- VAR-0 0 variants
- BOOK-MID 1,433
- PHOTO-FINISH ubiquitin
Nearest frequency peer: ubiquitin (-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.
Long-tail ranks near “UCR”
Sparse band: bars invert rank so rarer forms read shorter
- twiddling
twiddling
32,090 corpus weight
- ubiquitin
ubiquitin
32,087 corpus weight
- UCR
UCR
32,086 corpus weight
- udder
udder
32,084 corpus weight
- Udi
Udi
32,083 corpus weight
- Ueda
Ueda
32,082 corpus weight
What this shows Long-tail view: where “UCR” sits against similarly uncommon English ranks.
| Property | Value |
|---|---|
| Headword | UCR |
| Language | English |
| Part of speech | Proper noun |
| Letters | 3 |
| Frequency rank | #67,915 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Long-tail rank of “UCR” in English
Rare enough to double-check
UCR is uncommon English at frequency #67,915 among 1,433 “U” headwords, classed as aproper noun. Rarity is why readers land here mid-draft. Gloss: "Initialism of University of California, Riverside.".
UCR has no tracked misspelling variants, a sign its spelling follows regular English conventions. No confusable counterpart is on file for this word, since no other headword is close enough in sound or shape to pair with it.
No explicit etymology string is stored for this entry, so any spelling logic here comes from how the word's sounds map to letters, not a documented origin story. The correct English form is UCR, spelled U-C-R.
Definition
- 1Initialism of University of California, Riverside.
Recorded use
Wiktionary exampleThese source excerpts show how UCR appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.
“Twelve pesticides commonly applied to citrus groves are slated for study in the project’s plots,” reports Tom S. Bellows, UC Riverside assistant entomologist. They include four acaricides (Morestan, Kelthane, Pictran, Vendex), four thripsicides (Cygon, Carzol, Orthene, Sabadilla), and four scalicides (Parathion, Supracide, Lorsban, Sevin). The first test…
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 "UCR", not the corpus desk frequency band.
Same letter count
Frequency-ranked English headwords with 3 letters (nearest by frequency rank).