c. 1300, from Old French descendre (10c.) "descend, dismount; fall into; originate in," from Latin descendere "come down, descend, sink," from de- "down" (see de-) + scandere "to climb," from PIE root *skand- "jump" (see scan (v.)). Sense of "originate" is late 14c. in English. Related: Descended; descending.
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