Inhibitor

n. person or thing which inhibits, person or thing which restrains or holds back

Inhibitor or inhibition may refer to:Corrosion inhibitor, a substance that decreases the rate of metal oxidation Enzyme inhibitor, a substance that binds to an enzyme and decreases its activity.Inhibition of return, a feature of attentionInhibition Theory, a theory pertaining to the performance of a mental taskInhibitors (Revelation Space), machines in Alastair Reynolds's Revelation Space novelsLateral inhibition, a mechanism by which neurons are able to determine the origin of a stimulusMemory inhibition, processes that suppress or interfere with specific memories.Reaction inhibitor, a substance that prevents or decreases the rate of a chemical reactionSexual inhibition, reservations relating to sexual practicesSocial inhibition, a conditioned fear reaction to social marginalization or isolation.
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Noun
1. a substance that retards or stops an activity
(antonym) activator
(hypernym) substance, matter
(hyponym) antioxidant
(derivation) inhibit

n. inhibitor, person or thing which inhibits, person or thing which restrains or holds back

(n.)
That which causes inhibitory action; esp., an inhibitory nerve.