cycloidal

from WordNet (r) 3.0 (2006)

cycloidal
    adj 1: resembling a circle [syn: {cycloid}, {cycloidal}]

from The Collaborative International Dictionary of English v.0.48

Cycloidal \Cy*cloid"al\ (-al), a.
   Pertaining to, or resembling, a cycloid; as, the cycloidal
   space is the space contained between a cycloid and its base.
   [1913 Webster]

   {Cycloidal engine}. See {Geometric lathe}.
      [1913 Webster]