OPC
"opc" is a 3-letter English headword indexed on PlainSpell.
The verdict
“OPC” is uncommon English (frequency #54,986 among 1,431 “O” headwords), classed as a noun. The kind of spelling people second-guess.
- #54,986
- frequency rank, English
- 1,431
- “O” headwords
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Abbreviation of oligomeric proanthocyanidin.
Corpus desk
Index EN-opc · OPC · English
OPC · rank #54,986 · 0 variants · 0 confusables
- FREQ-RARE #54,986
- LEN-MID 3 letters
- VOW-1 1 vowel
- CONFUS-0 No pairs
- VAR-0 0 variants
- BOOK-MID 1,431
- PHOTO-FINISH omnipotence
Nearest frequency peer: omnipotence (-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 “OPC”
Sparse band: bars invert rank so rarer forms read shorter
- OED
OED
45,020 corpus weight
- Ogg
Ogg
45,018 corpus weight
- Okie
Okie
45,017 corpus weight
- omnipotence
omnipotence
45,016 corpus weight
- OPC
OPC
45,015 corpus weight
- opossum
opossum
45,014 corpus weight
What this shows Long-tail view: where “OPC” sits against similarly uncommon English ranks.
| Property | Value |
|---|---|
| Headword | OPC |
| Language | English |
| Part of speech | Noun |
| Letters | 3 |
| Frequency rank | #54,986 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Long-tail rank of “OPC” in English
Rare enough to double-check
OPC is uncommon English at frequency #54,986 among 1,431 “O” headwords, classed as anoun. Rarity is why readers land here mid-draft. 5 senses are on record.
No generated misspelling entries exist for OPC in our index, and the word's spelling is regular enough that our generator found nothing worth flagging. We don't track a confusable pairing for this entry, which usually means its spelling is distinct enough that readers don't reach for a similar-looking word instead.
Etymologically, the entry records: Abbreviation. The correct English form is OPC, spelled O-P-C.
Definition
- 1Abbreviation of oligomeric proanthocyanidin.
- 2Abbreviation of oropharyngeal cancer.
- 3Initialism of ordinary portland cement.
- 4Initialism of offshore patrol craft
- 5Initialism of offshore patrol cutter
Recorded use
Wiktionary exampleThese source excerpts show how OPC appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.
Ordinary Portland Cement (OPC) is the world's most common form of cement. The blue plaque dedicated to inventor Joseph Aspdin describes OPC as "one of mankind's most important manufactured materials".
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 "OPC", not the corpus desk frequency band.
Same letter count
Frequency-ranked English headwords with 3 letters (nearest by frequency rank).