trochoidal

from The Collaborative International Dictionary of English v.0.48

Trochoidal \Tro*choid"al\, a.
   1. (Geom.) Of or pertaining to a trochoid; having the
      properties of a trochoid.
      [1913 Webster]

   2. (Anat. & Zool.) See {Trochoid}, a.
      [1913 Webster]