To build or construct outward; to construct or erect as an external structure.
From Latin ex- 'out' + struere 'to build or construct.' This is a rare or archaic verb that follows the same Latin root pattern as 'construct' and 'instruct,' but with the ex- prefix emphasizing outward building.
This is a wonderfully obscure word that survived mostly in specialized architectural or technical writing—it reminds us that English has so many Latin-based 'construct' verbs (construct, instruct, obstruct, destruct) but 'extruct' never caught on because 'build' and 'erect' worked better for English speakers!
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