expressĭo, ōnis, f. [exprimo] (postAug.), a pressing or squeezing out.
I In gen.: mellis, Pall. Jun. 7, 3: spiritus, Vitr. 9, 9.—
II In partic.
A In mechanics, a forcing apparatus to raise water, Vitr. 1, 1; 8, 7; cf. 2. expressus.—
B In architect., a projection , i. e. a fillet , listel , Vitr. 4, 4 fin. —
C Of lang., vividness : summā expressione describere, Ambros. de Cain et Abel, 1, 2, 9.