Definition from Wiktionary, the free dictionary
pyrrolizidine (plural pyrrolizidines)
- (organic chemistry) Any of a class of alkaloids, found in many plants, that are hepatotoxic.
2010, Eric David Morgan, Biosynthesis in Insects, page 320:
- Generally the pyrrolizidine alkaloids exist in plants as N-oxides, as shown for monocrotaline and seneciphylline.