Word Study
superstruct
CIDE DICTIONARY
superstruct, v. t. [L. superstructus, p. p. of superstruere to build upon; super over + struere to build. See Super-, and Structure.].
To build over or upon another structure; to erect upon a foundation. [1913 Webster]
"This is the only proper basis on which to superstruct first innocency and then virtue." [1913 Webster]
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