nootropic

Etymology
, derived from the words  and. Equivalent to.

Noun

 * 1)  Any substance purported to increase or enhance cognitive abilities.
 * 2)  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.
 * 1)  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.

Hyponyms

 * caffeine
 * caffeine

Adjective

 * 1) Relating to substances that enhance cognitive performance.