Lewis & Short

lentĭtĭa, ae (lentĭtĭes, ēi, Auct. Aetn. 540), f. [lentus], pliancy, flexibility, toughness, viscosity, stickiness: virgas sequacis ad vincturas lentitiae, Plin. 16, 37, 68, § 174; 16, 40, 77, § 210: lactucae lentitiam pituitae digerunt, id. 20, 7, 26, § 64; cf. lentor.