Asymmetron

noun

Asym·​me·​tron

āˈsimə‧ˌträn

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

Word History

Etymology

New Latin, from Greek, neuter of asymmetros

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