phragmocone
ریشه و کاربرد
ریشه
The word 'phragmocone' is derived from the Greek words 'phragma' meaning 'fence' and 'konos' meaning 'cone'.
مثال
- The phragmocone of ammonites contained a series of chambers.
- The study of phragmocones provides insights into the evolution of ancient cephalopods.
- The intricate structure of the phragmocone allowed for buoyancy control in nautiloids.
ترکیبهای رایج
Phragmocone of ammonites Phragmocone structure Extinct cephalopods Ammonites and nautiloids
تعریف انگلیسی
noun
- the thin conical chambered internal shell (either straight or curved) of a belemnite