Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. An insecticide composed of a genetically altered bacterium (Bacillus thuringiensis) that is used to control many kinds of caterpillars that are pests of ornamental, crop, and other plants.

Etymologies

From New Latin B(acillus) t(huringi─ônsis), species name.
(American Heritage® Dictionary of the English Language, Fourth Edition)

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