Etymology
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quantitative (adj.)

1580s, "having quantity," from Medieval Latin quantitativus, from stem of Latin quantitas (see quantity). Meaning "measurable" is from 1650s. Related: Quantitatively; quantitativeness.

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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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quantitive (adj.)

a rare variant of quantitative, 1650s, from quantity + -ive. Related: Quantitively.

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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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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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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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iambic 

in prosody, 1570s (n.) "a foot of two syllables, the first short or unaccented, the second long or accented;" 1580s (adj.), "pertaining to or employing iambs," from Late Latin iambicus, from Greek iambikos, from iambos "metrical foot of one unaccented followed by one accented syllable; an iambic verse or poem," traditionally said to be from iaptein "to assail, attack" (in words), literally "to put forth, send forth" (in reference to missiles, etc.), but Beekes says "doubtless of Pre-Greek origin."

The meter of invective and lampoon in classical Greek since it was first used 7c. B.C.E. by Archilochus, whose tomb, Gaetulicus says, is haunted by wasps; iambics of various length formed the bulk of all English poetry before 20c. and a great deal since. The iambic of classical Greek and Latin poetry was quantitative.

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