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Meaning of turned-on

turned-on

Pronunciation: (tûrnd'on', -ôn'), [key]
— adj. Slang.
  1. lively and chic; switched-on.
  2. full of or characterized by excitement.
  3. under the influence of a narcotic or hallucinogen, as marijuana.
  4. sexually aroused.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.