tetrahydrocannabinol

from WordNet (r) 3.0 (2006)
tetrahydrocannabinol
    n 1: psychoactive substance present in marijuana [syn:
         {tetrahydrocannabinol}, {THC}]
    
from The Collaborative International Dictionary of English v.0.48
marijuana \marijuana\ n.
   1. A strong-smelling Asian plant ({Cannabis sativa}), also
      called {hemp}, from which a number of euphorogenic and
      halucinogenic drugs are prepared. The euphoric effect is
      predominently due to {tetrahydrocannabinol} ({THC}). [Also
      spelled {marihuana}.]

   Syn: cannabis, ganja, pot, grass, marihuana, {Cannabis
        sativa}.
        [WordNet 1.5]

   2. The dried leaves or the female flowers of the hemp plant,
      which is smoked or chewed to obtain a euphoric effect. The
      flowers usually have a higher concentration of the active
      ingredient, tetrahydrocannabinol.

   Syn: cannabis, ganja, pot, grass, marihuana, dope, weed,
        gage, sess, sens, smoke, skunk, Mary Jane.
        [WordNet 1.5]
    
from The Collaborative International Dictionary of English v.0.48
tetrahydrocannabinol \tet`ra*hy`dro*can*nab"i*nol\
   (t[e^]t`r[.a]*h[imac]`dr[-o]*k[a^]n*n[a^]b"[i^]n[add]l), n.
   (Chem. & Med.)
   A chemical substance ({C21H20O2}) which is produced by the
   hemp plant (Cannabis sativa), and is the physiologically
   active agent of dried preparations of that plant, called
   variously marijuana, hashish, ganja, hemp, etc.; also called
   {THC}. It causes the euphoric effect for which the
   preparations are smoked or chewed. It is used in medicine in
   a purified form as an antiemetic (an antinausea agent),
   especially in conjunction with chemotherapy of cancer. It
   occurs primarily as the [Delta]1-3,4-trans isomer, also
   called {[Delta]9-THC}, with small amounts of the
   [Delta]6-3,4-trans isomer detectable at about 1%. It is a
   controlled substance, classified as a hallucinogen, and its
   possession or distribution is illegal in almost all states of
   the United States. --MI11
   [PJC]
    
from The Collaborative International Dictionary of English v.0.48
Cannabis \Can"na*bis\, prop. n. [L., hemp. See {Canvas}.]
   1. (Bot.) A genus of a single species belonging to the order
      {Uricace[ae]}; hemp.
      [1913 Webster]

   2. The Indian hemp plant plant {Cannabis sativa} syn.
      {Cannabis Indica}. See {Cannabis Indica}, below.
      [PJC]

   {Cannabis Indica}, the Indian hemp, now considered a variety
      of the common hemp ({Cannabis sativa}), originating in
      Asia but now grown widely around the world. It can be
      formed into a tough fiber that is used to make rope and
      tough fabric. The dried leaves and female flowers are
      smoked or chewed by people to produce a euphoric or
      hallucinogenic effect, caused mainly by the substance
      {tetrahydrocannabinol} (THC) contained in it. The
      THC-containing products of Cannabis are classified as a
      controlled substance, and posession and sale are illegal
      in most states of the United States. Once classified as a
      narcotic, the plant is now more commonly referred to in
      the category of euphoric or hallucinogenic agents.
      [1913 Webster +PJC]
    

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