Lachesis

noun

Lach·​e·​sis ˈlak-ə-səs 

: one of the three Fates in Greek and Roman mythology who determine human destinies

Word History

Etymology

Latin, borrowed from Greek Láchesis, literally, "allotted destiny," from lache-, variant stem of lanchánein "to draw a lot, be chosen by lot" + -sis -sis

First Known Use

15th century, in the meaning defined above

Medical Definition

Lachesis

noun

Lach·​e·​sis ˈlak-ə-səs 

: a genus of American pit vipers comprising the bushmaster and related snakes