# Bt

> English word · Noun · frequency rank #8,518

## Definitions
1. Abbreviation of baronet, a title used after a holder's surname.
2. Bacillus thuringiensis, a species of bacteria used for biological control of insects.
3. Bacillus thuringiensis, a species of bacteria used for biological control of insects.
4. Initialism of botulinum toxin.
5. Abbreviation of biotite.

## Easily confused with
- **by** (https://plainspell.com/en/vs/bt-vs-by)
- **BW** (https://plainspell.com/en/vs/bt-vs-bw)
- **BX** (https://plainspell.com/en/vs/bt-vs-bx)
- **but** (https://plainspell.com/en/vs/bt-vs-but)
- **buy** (https://plainspell.com/en/vs/bt-vs-buy)
- **bus** (https://plainspell.com/en/vs/bt-vs-bus)
- **bye** (https://plainspell.com/en/vs/bt-vs-bye)
- **bug** (https://plainspell.com/en/vs/bt-vs-bug)
- **bud** (https://plainspell.com/en/vs/bt-vs-bud)
- **BTW** (https://plainspell.com/en/vs/bt-vs-btw)
- **bum** (https://plainspell.com/en/vs/bt-vs-bum)
- **bun** (https://plainspell.com/en/vs/bt-vs-bun)
- **BTC** (https://plainspell.com/en/vs/bt-vs-btc)
- **BTS** (https://plainspell.com/en/vs/bt-vs-bts)
- **BYU** (https://plainspell.com/en/vs/bt-vs-byu)
- **bub** (https://plainspell.com/en/vs/bt-vs-bub)
- **bur** (https://plainspell.com/en/vs/bt-vs-bur)
- **BTU** (https://plainspell.com/en/vs/bt-vs-btu)
- **Bui** (https://plainspell.com/en/vs/bt-vs-bui)
- **butt** (https://plainspell.com/en/vs/bt-vs-butt)

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/bt