Entry 1 sense Webster, 1913 Viscidity · Vis·cid·i·ty · IPA /vɪˈsɪdɪti/ 01 n. The quality or state of being viscid; also, that which is viscid; glutinous concretion; stickiness. 1. The quality or state of being viscid; also, that which is viscid; glutinous concretion; stickiness.