D defs.my
Entry 1 sense Webster, 1913

Inhibitor

/ĭnˌ-hĭb'-ət-ẽr/ · In·hib·i·tor · IPA /ɪnˈhɪbɪtɚ/
01 n. That which causes inhibitory action; esp., an inhibitory nerve.
  1. 1.
    That which causes inhibitory action; esp., an inhibitory nerve.