- Anaptichi
- Anaptychus An*ap"ty*chus, n.; pl. {Anaptichi}. [NL., fr. Gr. ? unfolding; ? back + ? to fold.] (Paleon.) One of a pair of shelly plates found in some cephalopods, as the ammonites. [1913 Webster]
The Collaborative International Dictionary of English. 2000.