Substrate \Sub"strate\, n. A substratum. [R.]
Source: Webster's Revised Unabridged Dictionary (1913)
Substrate \Sub"strate\, a. Having very slight furrows. [R.]
Substrate \Sub*strate"\, v. t. [L. substratus, p. p. of substrahere. See Substratum.] To strew or lay under anything. [Obs.]
The melted glass being supported by the substrated sand. --Boyle.