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The Collaborative International Dictionary of English v.0.48 (gcide)

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]


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]

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