'Cycloidal' definitions:

Definition of 'cycloidal'

From: WordNet
adjective
Resembling a circle [syn: cycloid, cycloidal]

Definition of 'Cycloidal'

From: GCIDE
  • 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]