Stylobate

In Greek architecture, stylobate is a platform on which colonnades of columns are placed (it is the "floor" of the temple). The stylobate was typically composed of an odd number of steps (most often three) above a leveling course that flattened out the area immediately beneath the temple. In some methodologies, the word stylobate is used to describe only the topmost step of the temple's base, while stereobate is used to describe the remaining steps of the platform beneath the stylobate and just above the leveling course.