- a bacterium used in genetically altered form in the biological control of budworms, gypsy moth larvae, Japanese beetles, and other insect pests. Abbreviation: B.t.
Origin of Bacillus thuringiensis
< New Latin (1915): Thuringian bacillus; so named in reference to its discovery in larvae of Mediterranean flour moths from a mill in Thuringia
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018