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.

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

inhibitor

A substance added to paint to retard drying, skinning, mildew growth, etc. Also see corrosion inhibitor, inhibiting pigment, drying inhibitor.
References in periodicals archive ?
A review of several published reports attribute the higher Gleason scores observed in the groups taking the 5-alpha reductase inhibitors (Avodart[R] or Proscar[R]) to the fact that it was easier to find high-grade cancers in the shrunken glands of men taking these drugs compared to the much larger glands of men in the placebo group.
The PCPT found an overall 25% relative risk reduction for prostate cancer in men who took the 5-alpha reductase inhibitor finasteride for 1-7 years.
To our knowledge, studies examining the efficacy and the adverse effects of the combination therapy of PDE-5 inhibitors with 5-alpha reductase inhibitors have not yet been published.
The two main classes of BPH drugs: alpha blockers like Flomax and UroXatral, which relax the muscles of the bladder neck and prostate, and 5-alpha reductase inhibitors like Proscar and Avodart, which lower levels of hormones produced by the prostate.
The findings suggest that men with early baldness may benefit from routine prostate cancer screening or preventive measures that could include the systematic use of 5-alpha reductase inhibitors, the researchers wrote (doi:10.
Whilst some symptoms of BPH are successfully addressed by the standard BPH therapies of alpha blockers and 5-alpha reductase inhibitors, nocturia remains inadequately treated.
Medical treatments for BPH include 5-alpha reductase inhibitors (5-ARIs), which block the conversion of testosterone to dihydrotestosterone (DHT) via 5-alpha reductase (5-AR).
Men were asked to take one of the 5-alpha reductase inhibitors or a placebo in a double-blind, randomized, controlled study over a number of years.

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