Vi'a-dūct, n.
n. [L. Lat. viaductus, from Lat. via, a way, and ductus, a leading; Fr. viaduc. See Duct.] A structure of considerable magnitude, and usually of masonry, for carrying a railway across a valley or river; a bridge.
n. [L. Lat. viaductus, from Lat. via, a way, and ductus, a leading; Fr. viaduc. See Duct.] A structure of considerable magnitude, and usually of masonry, for carrying a railway across a valley or river; a bridge.