plural noun
Tha·las·si·nid·ea | \thəˌlasəˈnidēə\

Definition of Thalassinidea 

: a subtribe of Anomura including small crustaceans with a thin flexible carapace, long soft abdomen, and unsymmetrical chelae that burrow in sand or mud along seashores — compare ghost shrimp

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Other Words from Thalassinidea

thalassinidean \⸗¦⸗⸗¦nidēən \ noun or adjective
thalassinoid \thəˈlasəˌnȯid \ adjective

History and Etymology for Thalassinidea

New Latin, from Thalassina, genus of crustaceans (from thalass- + -ina) + -idea

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