|1.||the curve described by a fixed point on the radius or extended radius of a circle as the circle rolls along a straight line|
|2.||rotating or capable of rotating about a central axis|
|3.||anatomy (of a structure or part) resembling or functioning as a pivot or pulley|
|[C18: from Greek trokhoeidēs circular, from trokhos wheel]|
trochoid tro·choid (trō'koid', trŏk'oid') or tro·choi·dal (trō-koid'l, trŏk-oid'l)
Capable of or exhibiting rotation about a central axis.
Permitting rotation, as a pivot.