Etymology
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induction (n.)
late 14c., "advancement toward the grace of God;" also (c. 1400) "formal installation of a clergyman," from Old French induction (14c.) or directly from Latin inductionem (nominative inductio) "a leading in, introduction, admission," noun of action from past participle stem of inducere "to lead" (see induce).

As a term in logic (early 15c.) it is from Cicero's use of inductio to translate Greek epagoge "leading to" in Aristotle. Induction starts with known instances and arrives at generalizations; deduction starts from the general principle and arrives at some individual fact. As a term in physics, in reference to electrical influence, 1801; military service sense is from 1934, American English. Related: Inductional.
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photoinduction (n.)

"action or process of induction by light," 1947, from photo- + induction. Related: Photoinductive; photoinduce.

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inductive (adj.)
early 15c., "bringing on, inducing," from Old French inductif or directly from Late Latin inductivus "serving to induce or infer," from induct-, past participle stem of Latin inducere (see induce). As a term in logic, "based on induction" (q.v.), from 1764. Related: Inductively.
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*deuk- 
Proto-Indo-European root meaning "to lead."

It forms all or part of: abduce; abducent; abduct; abduction; adduce; aqueduct; circumduction; conduce; conducive; conduct; conductor; conduit; deduce; deduction; dock (n.1) "ship's berth;" doge; douche; ducal; ducat; Duce; duchess; duchy; duct; ductile; duke (n.); educate; education; induce; induction; introduce; introduction; misconduct; produce; production; reduce; reduction; seduce; seduction; subduce; subduction; taut; team (n.); teem (v.1) "abound, swarm, be prolific;" tie (n.); tow (v.); traduce; transducer; tug; zugzwang.

It is the hypothetical source of/evidence for its existence is provided by: Latin dux (genitive ducis) "leader, commander," in Late Latin "governor of a province," ducere "to lead;" Old English togian "to pull, drag," teonteon "to pull, drag;" German Zaum "bridle," ziehen "to draw, pull, drag;" Middle Welsh dygaf "I draw."
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generalization (n.)
1761, "act of generalizing," from generalize + noun ending -ation. Meaning "an instance of generalizing, an induction, a general inference" is from 1794.
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installment (n.2)

also instalment, 1580s, "induction into office, act of installing," from install + -ment.

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impedance (n.)
"hindrance," especially and originally "resistance due to induction in an electrical circuit," 1886, from impede + -ance. The classically correct formation would be *impedience.
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inaugurate (v.)
"induct into office by formal ceremony," c. 1600, a back-formation from inauguration (q.v.) and also from Latin inauguratus, past participle of inaugurare. The etymological sense is "make a formal beginning or induction into office with suitable ceremonies" (which in ancient Rome included especially the taking of auguries). The earlier verb in English was augur (1540s). Related: Inaugurated; inaugurating; inaugurator.
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