protoconch
English
Etymology
proto- + conch
Noun
protoconch (plural protoconches or protoconchs)
- (zoology) The embryonic shell, or first chamber, of ammonites and other cephalopods.
Coordinate terms
- teleoconch
Part or all of this entry has been imported from the 1913 edition of Webster’s Dictionary, which is now free of copyright and hence in the public domain. The imported definitions may be significantly out of date, and any more recent senses may be completely missing.
(See the entry for protoconch in Webster’s Revised Unabridged Dictionary, G. & C. Merriam, 1913.)