Definition of knack. 1  1 : a special ready capacity that is hard to analyze or teach. 2  2a : a clever trick or stratagemb : a clever way of doing something. 3  3 archaic : an ingenious device; broadly : toy, knickknack.
Medical Definition of gingivoplasty. plural. gingivoplasties. : a surgical procedure that involves reshaping the gums for aesthetic or functional purposes.
Superficial thrombophlebitis is a common inflammatory-thrombotic disorder in which a thrombus develops in a vein located near the surface of the skin. Most superficial veins that develop thrombosis also have phlebitis, in contrast to deep venous thrombosis (DVT), a sometimes