To build up or construct something from the ground up; to erect or establish.
From Latin ex- (out, up) + struere (to build). The word suggests building something tangible, whether literally constructing a building or figuratively establishing an idea or system.
This is an archaic cousin of 'structure' and 'construct'—while we abandoned it in everyday English, it survives in specialized contexts where builders and architects need old-fashioned, formal language.
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