I.thickness, density.
I. Abstr. (in good prose): “postes ...Quantā firmitate facti et quantā crassitudine,” Plaut. Most. 3, 2, 135: “parietum,” Caes. B. C. 2, 8: “libramentum, in quo nulla omnino crassitudo sit,” Cic. Ac. 2, 36, 116: “columnarum,” Vitr. 4, 4, 2: “fornicum,” Liv. 44, 11, 5 al.: “stipites feminis crassitudine,” Caes. B. G. 7, 73; cf. id. ib. 3, 13: “aëris,” Cic. Div. 1, 42, 93: “cerae,” Plin. 27, 9, 47, § 71: “mellis,” id. 28, 12, 50, § 187: “(ostrea) crassitudine potius spectanda quam latitudine,” id. 32, 6, 21, § 60.—
II. Concr., a thick matter, dregs, sediment, Cato, R. R. 39, 1; Plin. 25, 11, 90, § 141.