Bacillus thuringiensis
a bacterium used in genetically altered form in the biological control of budworms, gypsy moth larvae, j-panese beetles, and other insect pests.
abbreviation: b.t.
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an antibiotic polypeptide derived by the hydrolytic action of bacillus subtilis on protein, primarily used topically in the treatment of superficial infections caused by susceptible gram-positive organisms. noun an antibiotic used mainly in treating bacterial skin infections: obtained from the bacterium bacillus subtilis bacitracin bac·i·tra·cin (bās’ĭ-trā’sĭn) n. a polypeptide antibiotic obtained from a strain of […]
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a pain, especially in the lumbar region of the back, usually caused by the strain of a muscle or ligament. historical examples after headache, backache, and loss of appet-te comes usually a mild diarrhœa. preventable diseases woods hutchinson did a man ever have a backache like the dragging, pulling, tearing ache of a woman? treatise […]
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a small anchor for backing a larger one.
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backward and forward; side to side; to and fro: a back-and-forth shuttling of buses to the stadium; the back-and-forth movement of a clock’s pendulum. unresolved argument or discussion. contemporary examples see the back-and-forth allegations of stalking and text-message har-ssment. lady gaga and perez hilton’s wild feud: stalking allegations and smear campaigns the daily beast august […]
- Back and to
back-and-forth; to and fro.