Sū′per-strūet′ūre, n.

(-strūkt′yur, 53), n. [Fr. superstructure. See supra.]

1. Any material structure or edifice built on something else; especially, the building raised on a foundation.
2. Any thing erected on a foundation or basis; as, in education, we begin with teaching languages as the foundation, and proceed to erect on that foundation the superstructure of science.
3. (Railway Engin.) The sleepers, rails, and fastenings, in distinction from the road-bed; — called also permanent-way.