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Bt

1 of 2

noun

: a preparation of a bacterium (Bacillus thuringiensis) often modified by genetic engineering for use as a biopesticide against insects and especially lepidopteran larvae
also : the bacterium itself

Bt

2 of 2

abbreviation

baronet

Word History

Etymology

Noun

New Latin Bacillus thuringiensis, species name, literally, Thuringian bacillus

First Known Use

Noun

1971, in the meaning defined above

Time Traveler
The first known use of Bt was in 1971

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