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Asymmetron

noun
Asym·​me·​tron | \ āˈsimə‧ˌträn\

Definition of Asymmetron

: a genus of lancelets (family Epigonichthyidae) differing from Branchiostoma in having asymmetrical metapleura and but one series of gonads, the right — compare amphioxus

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History and Etymology for Asymmetron

New Latin, from Greek, neuter of asymmetros

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