PBB
"pbb" is a 3-letter English headword indexed on PlainSpell.
The verdict
“PBB” is uncommon English (frequency #95,250 among 4,417 “P” headwords), classed as a noun. The kind of spelling people second-guess.
- #95,250
- frequency rank, English
- 4,417
- “P” headwords
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Initialism of polybrominated biphenyl.
Corpus desk
Index EN-pbb · PBB · English
PBB · rank #95,250 · 0 variants · 0 confusables
- FREQ-RARE #95,250
- LEN-MID 3 letters
- VOW-0 0 vowels
- CONFUS-0 No pairs
- VAR-0 0 variants
- BOOK-MID 4,417
- PHOTO-FINISH Payette
Nearest frequency peer: Payette (-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 “PBB”
Sparse band: bars invert rank so rarer forms read shorter
- paulin
paulin
4,755 corpus weight
- Payette
Payette
4,752 corpus weight
- PBB
PBB
4,751 corpus weight
- Pendergrass
Pendergrass
4,748 corpus weight
- Pennie
Pennie
4,747 corpus weight
- pepperidge
pepperidge
4,746 corpus weight
What this shows Long-tail view: where “PBB” sits against similarly uncommon English ranks.
| Property | Value |
|---|---|
| Headword | PBB |
| Language | English |
| Part of speech | Noun |
| Letters | 3 |
| Frequency rank | #95,250 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Long-tail rank of “PBB” in English
Rare enough to double-check
PBB is uncommon English at frequency #95,250 among 4,417 “P” headwords, classed as anoun. Rarity is why readers land here mid-draft. 4 senses are on record.
Zero misspellings are on record for PBB in our index, since its letter sequence doesn't invite the usual edit-distance slips. 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 any spelling logic here comes from how the word's sounds map to letters, not a documented origin story. The correct English form is PBB, spelled P-B-B.
Definition
- 1Initialism of polybrominated biphenyl.
- 2Initialism of passenger boarding bridge; Synonym of jet bridge.
- 3Initialism of performance-based bonus.
- 4Initialism of Provider Backbone Bridges or provider backbone bridging.
Recorded use
Wiktionary exampleThese source excerpts show how PBB appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.
When operating on customer MAC (C-MAC) and service MAC (S-MAC) addresses, PBB uses a new backbone MAC (B-MAC) address. The B-MAC address is added at the edge of the PBB network, that is administered by a carrier VPN or a carrier-of-carriers VPN.
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 "PBB", not the corpus desk frequency band.
Same letter count
Frequency-ranked English headwords with 3 letters (nearest by frequency rank).