BCR

noun

"bcr" is a 3-letter English headword indexed on PlainSpell.

The verdict

“BCR” is uncommon English (frequency #68,858 among 4,121 “B” headwords), classed as a noun. The kind of spelling people second-guess.

#68,858
frequency rank, English
4,121
“B” headwords

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - B cell receptor

Corpus desk

Index EN-bcr · BCR · English

BCR · rank #68,858 · 0 variants · 0 confusables

  • FREQ-RARE #68,858
  • LEN-MID 3 letters
  • VOW-0 0 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-MID 4,121
  • PHOTO-FINISH baying

Nearest frequency peer: baying (-2 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 “BCR”

Sparse band: bars invert rank so rarer forms read shorter

corpus weight

What this shows Long-tail view: where “BCR” sits against similarly uncommon English ranks.

Source FrequencyWords open word-frequency list As of September 3, 2026
Key facts for BCR
PropertyValue
HeadwordBCR
LanguageEnglish
Part of speechNoun
Letters3
Frequency rank#68,858
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “BCR” in English

This scale runs from the tiny cluster of words that carry ordinary speech (left) to the long tail of words almost nobody reaches for (right).BCRfalls in this rarity band:

#1#100#1K#10K#100K
← used constantlyrarely used →

Ticks step logarithmically, so each one marks a roughly tenfold drop in how often the word turns up. Rare peers in the same band: “baying” (#68,856), “beechwood” (#68,860), “bassinet” (#68,855). Among 4,121 “B” headwords, “BCR” is #68,858. Source: FrequencyWords open word-frequency list.

Rare enough to double-check

BCR is uncommon English at frequency #68,858 among 4,121 “B” headwords, classed as anoun. Rarity is why readers land here mid-draft. Gloss: "B cell receptor".

No misspelling variants are generated for BCR in our index, a sign its spelling follows regular English conventions. Our dataset records no confusable match here, since nothing in our dataset looks or sounds close enough to cause mix-ups.

Our source data has no etymology on file for this entry, so its spelling is best read as a straightforward mapping from sound to letter. The correct English form is BCR, spelled B-C-R.

Definition

  1. 1
    B cell receptor

Recorded use

Wiktionary example

These source excerpts show how BCR appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.

  1. Zydelig targets what’s called PI3-kinase [sic], a family of enzymes involved in cell growth that get hijacked by some cancers. As a group, doctors sometimes call these drugs B cell receptor (BCR) pathway inhibitors.

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

How do you spell "BCR"?
"BCR" is spelled B-C-R.
What does "BCR" mean?
As a noun, "BCR" means: B cell receptor
What language does "BCR" come from?
"BCR" is a English word. PlainSpell's reference spans five languages -- English, Spanish, Portuguese, French, and German -- with definitions, pronunciations, and spelling data for each.
Is PlainSpell free to use?
Yes, PlainSpell is a completely free word reference. You can look up definitions, pronunciations, confusable pairs, homophones, and spelling corrections across 5 languages without any sign-up or subscription.

Similar English words by spelling shape

Same letter count and similar misspelling depth for "BCR", not the corpus desk frequency band.

Same letter count

Frequency-ranked English headwords with 3 letters (nearest by frequency rank).

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list