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potential (adj.)

late 14c., "possible" (as opposed to actual), from Old French potenciel and directly from Late Latin potentialis "potential," from Latin potentia "power, might, force;" figuratively "political power, authority, influence," from potens "powerful," from potis "powerful, able, capable; possible;" of persons, "better, preferable; chief, principal; strongest, foremost," from PIE root *poti- "powerful; lord." The noun, meaning "that which is possible," is first attested 1817, from the adjective.