Monolithic slab
A foundation in which the slab and its perimeter footing are poured at the same time as a single piece, common in warm climates with shallow frost depth.
What does monolithic slab mean?
Pouring in one operation saves a mobilization and eliminates a cold joint between footing and slab, but it requires the excavation, reinforcement, and plumbing to be complete and correct before a single yard arrives. It is less suitable where deep frost protection is required, because the footing trench would have to be impractically deep. Also called a thickened-edge or turned-down slab.
In practice
Most slab-on-grade houses in the southern United States sit on a monolithic pour, formed and poured in a single morning.