Inhibitor

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inhibitor

[in′hib·əd·ər]
(aerospace engineering)
A substance bonded, taped, or dip-dried onto a solid propellant to restrict the burning surface and to give direction to the burning process.
(chemistry)
A substance which is capable of stopping or retarding a chemical reaction; to be technically useful, it must be effective in low concentration.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Inhibitor

 

a circuit having m + n inputs and a single output, at which a signal can appear only when there are no signals on the m inputs (inhibiting). The other n inputs (principal) form one of the two logic connections, “AND” or “OR.” Inhibitors are used extensively in computers. They are very often understood to be a circuit having a single principal input and a single inhibiting input. A signal appears at the output of such a circuit when a signal is present on the principal input but there is none on the inhibiting input. Such an inhibitor is called an anticoincidence gate; its conventional representation is given in Figure 1.

Figure 1. Block diagram of an anticoincidence gate (inhibitor) with m — 1 and n 1:(A) principal input, (Q) inhibiting input, (Ga) anticoincidence gate

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.

inhibitor

A substance added to paint to retard drying, skinning, mildew growth, etc. Also see corrosion inhibitor, inhibiting pigment, drying inhibitor.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
References in periodicals archive ?
It seems likely that the results we observed after application of the nonspecific phosphodiesterase inhibitors and forskolin are due to their effects on ion transport, rather than on cAMP or cGMP levels.
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PDE 5 inhibitors (Phosphodiesterase inhibitors) revolutionalised the treatment of impotency.
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Effects of phosphodiesterase inhibitors on spontaneous nuclear maturation and cAMP concentrations in bovine oocytes.
Chung, "Phosphodiesterase inhibitors in airways disease," European Journal of Pharmacology, vol.
Additionally, phosphodiesterase inhibitors such as sildenafil (Viagra) are often used in more severe cases.
"A new class of tablets (called phosphodiesterase inhibitors), such as the new Roflumilast, hold great promise.
Key classes of mechanism of action include endothelin receptor antagonists, platelet aggregation inhibitors, phosphodiesterase inhibitors, serotonin pathway antagonists, angiotensin receptor antagonists, P2Y 12 receptor inhibitors, PDE5 inhibitors, prostacyclin (PGI2) agonists, nitric oxide synthetase inhibitors.
Methylxanthines, which are phosphodiesterase inhibitors, promote bronchodilation.
Approval of sildenafil (Viagra) and other type-5 phosphodiesterase inhibitors (vardenafil and tadalafil) for the treatment of erectile dysfunction in men was followed by a series of studies to determine their efficacy in women.

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