APTYCHUS

Meaning of APTYCHUS in English

noun a shelly plate found in the terminal chambers of ammonite shells. some authors consider them to be jaws; others, opercula.

Webster English vocab. Английский словарь Webster. 2012

APTYCHUS — ˈaptə̇kəs noun ( plural apty·chi -ˌkī) Etymology: New Latin, from a- (II) + Greek ptychē fold — more at ptych- …
Webster's New International English Dictionary
APTYCHUS — (n.) A shelly plate found in the terminal chambers of ammonite shells. Some authors consider them to be jaws; others, …
Английский словарь Webster
APTYCHUS — ( n. ) A shelly plate found in the terminal chambers of ammonite shells. Some authors consider them to be …
Webster's Revised Unabridged English Dictionary
SYNAPTYCHUS — |sin, sə̇n+ noun Etymology: New Latin, from syn- + aptychus : an operculum of two parts united in the median …
Webster's New International English Dictionary

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