spisso, āvi, ātum, 1, v. a. [spissus].
I Lit., to thicken , make thick , condense (poet. and in post-Aug. prose; esp. freq. in Pliny the elder; cf. denso): omne lac igne spissatur, Plin. 11, 41, 96, § 238; so, spissatum lac, id. 20, 7, 24, § 58: farinae modo spissatur in panem, id. 13, 4, 9, § 47: ignis densum spissatus in aëra transit, Ov. M. 15, 250; cf. Luc. 4, 77: (aquilo) sanum corpus spissat, Cels. 2, 1 med. ; cf. Plin. 26, 13, 83, § 134; Sen. Ep. 90, 10.—*
II Trop., to urge on , hasten an action, i. e. to perform it more rapidly : spissare officium, Petr. 140.