/pree kast", -kahst"/ , v. , precast, precasting , adj. Building Trades.
v.t.
1. to cast (a concrete block or slab, etc.) in a place other than where it is to be installed in a structure.
adj.
2. (of a building or section) cast before being transported to the site of installation: a precast concrete roof.
[ 1860-65; PRE- + CAST ]