The story
From bimato- (of unknown origin) + -prost (“prostaglandin”).
Etymology from Wiktionary, CC BY-SA 4.0.
bimatoprost
Today it means: A prostaglandin analog C₂₅H₃₇NO₄ used topically to reduce elevated intraocular pressure (as in the treatment of open-angle glaucoma) and promote the growth of longer and thicker eyelashes. It is marketed under the trademarks Latisse and Lumigan. Full definition →