stenohaline

adjective

steno·​ha·​line ˌste-nō-ˈhā-ˌlīn 

-ˈha-ˌlīn

of an aquatic organism

: unable to withstand wide variation in salinity of surrounding water

Word History

Etymology

International Scientific Vocabulary sten- + Greek halinos of salt, from hals salt — more at salt

First Known Use

circa 1920, in the meaning defined above