1. oversite - Noun
2. oversite - Adjective
oversite (not comparable)
(construction) Laid over the ground, or built above an existing site.
(construction) A layer of concrete underneath the ground floor of a building, as a seal
(construction) An oversite slab, a slab on grade, a flat, solid layer of concrete laid over prepared ground, usually serving as a base for flooring.
Source: en.wiktionary.org