| 释义 | in·duc·tor \ə̇nˈdəktə(r)\ noun
 (-s)
 Etymology: partly from induct + -or; partly probably from induction, after such pairs as English conduction : conductor
 1.  : one that inducts; especially  : a person who inducts another into an office or benefice
 2.
 a.  : an inductance coil or reactor
 b.  : a mass of iron used in certain magnetic train-control devices
 3.  : a substance that increases the rate of a chemical reaction and that is used up during the reaction — distinguished from catalyst
 4.  : a substance capable under certain circumstances of inducing a specific type of development in embryonic or other undifferentiated tissue
 < chordamesoderm acts on embryonic ectoderm as an inductor of neural tissue >
 — compare competence 5
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