meiostomatous

adjective
meio·​stoma·​tous | \ ˌmī-ə-ˈstäm-ət-əs How to pronounce meiostomatous (audio) , -ˈstōm- How to pronounce meiostomatous (audio) \

Medical Definition of meiostomatous

of a larval nematode
: having the oral structures reduced or simplified as compared with related forms