Ar-tē'rĭ-ŏt'o-my, n.

n. [Lat. arteriotomia, Gr. ἀρτηριοτομία, from ἀρτηρία and τέμνειν, to cut; τομή, a cutting.] (Anat.) (a.) The opening of an artery by a lancet, or other instrument, for the purpose of letting blood. (b.) That part of anatomy which treats of the dissection of the arteries.