protoconch
noun
pro·to·conch
\ˈprōtə+ˌ-\
Definition of protoconch
1 : the embryonic shell of a mollusk (as a univalve)
2 : the apical chamber or whorl of an ammonite or gastropod
protoconchal
adjectivePeople Are Reading
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Origin and Etymology of protoconch
International Scientific Vocabulary prot- + conch
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