conchoidal


con·choi·dal

adjective \käŋ-ˈki-dəl, kän-\

Definition of CONCHOIDAL

:  having elevations or depressions shaped like the inside surface of a bivalve shell
con·choi·dal·ly \-dəl-ē\ adverb

Origin of CONCHOIDAL

Greek konchoeidēs like a mussel, from konchē
First Known Use: 1666

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