I. noun Etymology: New Latin Bacillus thuringiensis, species name, literally, Thuringian bacillus Date: 1971 a preparation of a bacterium ( Bacillus thuringiensis ) often modified by genetic engineering for use as a biopesticide against insects and especially lepidopteran larvae, II. abbreviation baronet
BT
Meaning of BT in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012