Any of various rod-shaped, spore-forming aerobic bacteria in the genus Bacillus, some of which cause disease. / Any bacilliform (rod-shaped) bacterium.

Having multiple meanings.

A type of purgative drug made from the root of a type of morning glory plant (Operculina turpethum); or the plant itself.

(American spelling, biochemistry, steroids, pharmacology) A relatively weak natural estrogenic hormone that is a glycol C₁₈H₂₄O₃ found in the body chiefly as a metabolite of estradiol, is the main ...