depressant


depressant
1. Diminishing functional tone or activity. 2. An agent that reduces nervous or functional activity, such as a sedative or anesthetic. [L. de-primo, pp. -pressus, to press down]

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de·pres·sant -ənt adj tending to depress esp lowering or tending to lower functional or vital activity <a drug with a \depressant effect on heart rate>
depressant n one that depresses specif an agent that reduces bodily functional activity or an instinctive desire (as appetite) <a \depressant of intestinal spasm>

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n.
an agent that reduces the normal activity of any body system or function. Drugs such as general anaesthetic, barbiturate, and opiates are depressants of the central nervous system and respiration. cytotoxic drug, such as azathioprine, are depressants of the levels of white blood cells.

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de·pres·sant (de-presґənt) 1. diminishing functional activity. 2. an agent that reduces functional activity and the vital energies in general by producing muscular relaxation and diaphoresis.

Medical dictionary. 2011.

Look at other dictionaries:

  • depressant — ► ADJECTIVE ▪ reducing functional or nervous activity. ► NOUN ▪ a depressant drug or other agent …   English terms dictionary

  • depressant — [dē pres′ənt, dipres′ənt] adj. [ DEPRESS + ANT] lowering the rate of muscular or nervous activity n. a depressant medicine, drug, etc.; sedative …   English World dictionary

  • Depressant — De*press ant, n. (Med.) An agent or remedy which lowers the vital powers. [1913 Webster] …   The Collaborative International Dictionary of English

  • depressant — index narcotic (adjective), narcotic (noun) Burton s Legal Thesaurus. William C. Burton. 2006 …   Law dictionary

  • depressant — sedative, 1876 as a noun, 1887 as an adjective; see DEPRESS (Cf. depress) + ANT (Cf. ant) …   Etymology dictionary

  • depressant — [n] sedative calmant, downer, intoxicant, relaxant, tranquilizer; concept 7 …   New thesaurus

  • depressant — UK [dɪˈpres(ə)nt] / US noun [countable] Word forms depressant : singular depressant plural depressants a drug or substance that makes you feel relaxed and makes your body work and react more slowly Derived word: depressant UK / US adjective …   English dictionary

  • depressant — 1. noun A pharmacological substance which decreases neuronal or physiological activity. Alcohol acts first as a stimulant and then as a depressant. 2. adjective Acting as a depressant …   Wiktionary

  • depressant — noun Date: 1876 one that depresses; specifically an agent that reduces a bodily functional activity or an instinctive desire (as appetite) • depressant adjective …   New Collegiate Dictionary

  • Depressant — A depressant is a drug that reduces the function or activity of a specific part of the body or brain.[1] Due to their effects typically having a down quality to them, depressants are also occasionally referred to as downers. Stimulants or uppers …   Wikipedia