The Collaborative International Dictionary of English v.0.48:

Catadicrotism \Cat`a*di"cro*tism\, n. [Cata- + dicrotism.]
   (Physiol.)
   Quality or state of being catacrotic. -- Cat`a*di*crot"ic,
   a.
   [Webster 1913 Suppl.] Catadioptric