Urechis

noun

Ure·​chis

ˈyu̇rəkə̇s,

yəˈrek-

: a genus (the type of the family Urechidae) of large echiuroid worms which are common in mud along the California seacoast and in which a circulatory system is completely lacking so that the blood corpuscles float free in the coelomic fluid

Word History

Etymology

New Latin, from ur- entry 2 + Greek echis viper

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