free-base

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free·base

or free-base (frē′bās′)

v. free·based, free·bas·ing, free·bas·es or free-based or free-bas·ing or free-bas·es

v.tr.

1. To purify (cocaine) by treating its powdered hydrochloride form with an alkaloid solution such as ammonia and then using a heated solvent to separate out the precipitate.

2. To use (cocaine purified in this way) by smoking it or by inhaling the fumes after burning it.

v.intr.

To prepare or use cocaine purified in this way.

Cocaine purified by this method.

free′bas′er n.

American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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Verb 1. [画像:free-base - use (purified cocaine) by burning it and inhaling the fumes]free-base - use (purified cocaine) by burning it and inhaling the fumes

base

do drugs, drug - use recreational drugs

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References in periodicals archive ?

The metal free-base [H.sub.2]TPP was synthesized by the conventional method of condensation of benzaldehyde with pyrrole by modified Adler method [18].

Electrochemical and spectroscopic characterization of aluminium(III)-para-methyl-meso-tetraphenylporphyrin complexes containing substituted salicylates as axial ligands