n. [ L. arctus shut in, narrow, p. p. of arcere to shut in: cf. F. arctation. ] (Med.) Constriction or contraction of some natural passage, as in constipation from inflammation. [ 1913 Webster ]
n. [ L. rotatio: cf. F. rotation. ]
Moment of rotation.
Rotation in office,
Rotation of crops,
a. Pertaining to, or resulting from, rotation; of the nature of, or characterized by, rotation;