from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Any substance purported to increase cognitive abilities.
- n. A drug that enhances learning and memory and lacks the usual pharmacology of other psychotropic drugs (e.g. sedation, motor stimulation) and possesses very few side effects and extremely low toxicity.
Coined in 1972 by Dr. Corneliu E. Giurgea, derived from the Greek words νόος (noos, "mind") and τροπέω (tropeō, "to turn") (Wiktionary)