industry (n.)

late 15c., "cleverness, skill," from Old French industrie "activity; aptitude, experience" (14c.) or directly from Latin industria "diligence, activity, zeal," noun use of fem. of industrius "active, diligent," from early Latin indostruus "diligent," from indu "in, within" (from PIE *endo-, extended form of root *en "in") + stem of struere "to build" (from PIE root *stere- "to spread"). The meaning "habitual diligence, effort" is from 1530s; that of "systematic work" is from 1610s. The sense "a particular trade or manufacture" is first recorded 1560s.

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