mysis

noun
my·​sis | \ ˈmīsə̇s\

Definition of mysis

1 capitalized : the type genus of the family Mysidae
2 or mysis stage plural -es : a larva of higher crustaceans (as macrurans and peneids) having all the thoracic appendages biramous

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History and Etymology for mysis

New Latin, from Greek mysis action of closing (used of the lips or eyes), from myein to close (used of the lips or eyes), close the eyes + -sis

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