Definition of chiton
1 : any of a class (Polyplacophora) of elongated bilaterally symmetrical marine mollusks with a dorsal shell of calcareous plates
2 [Greek chitōn] : the basic garment of ancient Greece worn usually knee-length by men and full-length by women
Origin and Etymology of chiton
New Latin, genus name, from Greek chitōn tunic, of Semitic origin; akin to Hebrew kuttōneth tunic
First Known Use: 1816
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