D defs.my
Entry 2 senses Webster, 1913

Inducer

· In·du·cer · IPA
01 n. One who, or that which, induces or incites.
  1. 1.
    One who, or that which, induces or incites.
  2. 2.
    A substance which, when it contacts a living cell, causes the activation of a gene; as, non-metabolizable inducers are useful for studying the kinetics of genetic control systems.(Genetics)