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Substance
(redirected from psychoactive substance)

    Also found in: Dictionary/thesaurus, Medical, Encyclopedia, Wikipedia 0.04 sec.

Essence; the material or necessary component of something.

A matter of substance, as distinguished from a matter of form, with respect to pleadings, affidavits, indictments, and other legal instruments, entails the essential sufficiency, validity, or merits of the instrument, as opposed to its method or style.

SUBSTANCE, evidence. That which is essential; it is used in opposition to form.
     2. It is a general rule, that on any issue it is sufficient to prove the substance of the issue. For example, in a case where the defendant pleaded payment of the principal sum and all interest due, and it appeared in evidence that a gross sum was paid, not amounting to the full interest, but accepted by the plaintiff as full payment, the proof was held to be sufficient. 2 Str. 690; 1 Phil. Ev. 161.
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? References in periodicals archive
On one hand, this ambivalence is key: The question of how the experience of psychoactive substances such as MDMA or LSD relates to other unusual mind states is a vexed issue, one that echoes crucial contemporary concerns about simulation and the manufacture of subjectivity.
"Ecstasy: In and About Altered States"; Los Angeles Museum of ... by Davis, Erik / Artforum International
Microgram's release was mostly unnoticed, and its reception has been subdued--so subdued that even the chemical underground, where people in years past might have found in the newsletter a wealth of knowledge about how to synthesize and distribute psychoactive substances, has hardly noticed it.
Open secrets: how the government lost the drug war in cyberspace by Erard, Michael / Reason
The report, Neuroscience of Psychoactive Substance Use and Dependence, encourages an increasing awareness of the complex nature of substance dependence and supports cost-effective community-based prevention as well as treatment approaches that do not stigmatise patients.
Substance dependence a 'disorder' by Australian Nursing Journal
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