Meaning

adjective of structural members especially of concrete; cast into form before being transported to the site of installation

originEtymology tree Proto-Indo-European *per- Proto-Indo-European *preh₂- Proto-Indo-European *-i Proto-Indo-European *préh₂i? Proto-Italic *prai Proto-Italic *prai- Latin prae-lbor. Middle English pre- English pre- Proto-Germanic *kas- Proto-Germanic *kastōną Old Norse kastabor. Middle English casten English cast English precast From pre- + cast.

Etymology from Wiktionary, CC BY-SA 3.0