Entry 2 senses Webster, 1913 Trochoidal · Tro·choid·al · IPA 01 a. Of or pertaining to a trochoid; having the properties of a trochoid. 1. Of or pertaining to a trochoid; having the properties of a trochoid.(Geom.) 2. See Trochoid, a.(Anat. & Zool.) See: Trochoid