: 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
baronet
Examples of Bt in a Sentence
Recent Examples on the Web
Dawn Pettinelli, Hartford Courant, 27 July 2024
Mosquito Bits contain the biological pesticide Bt, which kills worms, caterpillars (so be careful with it around pollinator plants) and mosquito larvae.
—Nan Sterman, San Diego Union-Tribune, 6 Apr. 2024
That will reduce global emissions by 8.3 Bt CO2, equivalent to 22% of emissions today.
—Wood MacKenzie, Forbes, 28 Feb. 2024
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Noun
Finally, if the caterpillar infestation becomes too extensive, Dr. Ghimire recommends Bacillus thuringiensis (Bt), which is a biological control for Lepidoptera species of moths and butterflies.
—Dawn Pettinelli, Hartford Courant, 27 July 2024
Mosquito Bits contain the biological pesticide Bt, which kills worms, caterpillars (so be careful with it around pollinator plants) and mosquito larvae.
—Nan Sterman, San Diego Union-Tribune, 6 Apr. 2024
That will reduce global emissions by 8.3 Bt CO2, equivalent to 22% of emissions today.
—Wood MacKenzie, Forbes, 28 Feb. 2024
Dictionary Entries Near Bt
Cite this Entry
“Bt.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Bt. Accessed 8 Nov. 2024.
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