Mid 19th century; earliest use found in James Dana (1813–1895), geologist, zoologist, and teacher. From oxy- + -stome, after French oxystome or scientific Latin Oxystoma, family name.
Definition of oxystome in US English:
oxystome
nounˈɒksɪstəʊm
An oxystomatous crab.
Origin
Mid 19th century; earliest use found in James Dana (1813–1895), geologist, zoologist, and teacher. From oxy- + -stome, after French oxystome or scientific Latin Oxystoma, family name.