pure

[pyoor]
adjective, purer, purest.
1.
free from anything of a different, inferior, or contaminating kind; free from extraneous matter: pure gold; pure water.
2.
unmodified by an admixture; simple or homogeneous.
3.
of unmixed descent or ancestry: a pure breed of dog.
4.
free from foreign or inappropriate elements: pure Attic Greek.
5.
clear; free from blemishes: pure skin.
6.
(of literary style) straightforward; unaffected.
7.
abstract or theoretical (opposed to applied ): pure science.
8.
without any discordant quality; clear and true: pure tones in music.
9.
absolute; utter; sheer: to sing for pure joy.
10.
being that and nothing else; mere: a pure accident.
11.
clean, spotless, or unsullied: pure hands.
12.
untainted with evil; innocent: pure in heart.
13.
physically chaste; virgin.
14.
ceremonially or ritually clean.
15.
free of or without guilt; guiltless.
16.
independent of sense or experience: pure knowledge.
17.
Biology, Genetics.
b.
containing only one characteristic for a trait.
18.
Phonetics, monophthongal.

Origin:
1250–1300; Middle English pur < Old French < Latin pūrus clean, unmixed, plain, pure

pureness, noun
hyperpure, adjective
hyperpurely, adverb
hyperpureness, noun
superpure, adjective
unpure, adjective
unpurely, adverb
unpureness, noun


1. unmixed, unadulterated, unalloyed, uncontaminated, untainted, unstained, undefiled, untarnished, immaculate, unpolluted, uncorrupted. See clean. 12. modest, virtuous, undefiled.
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
pure (pjʊə)
 
adj
1.  not mixed with any extraneous or dissimilar materials, elements, etc: pure nitrogen
2.  free from tainting or polluting matter; clean; wholesome: pure water
3.  free from moral taint or defilement: pure love
4.  (prenominal) (intensifier): pure stupidity; a pure coincidence
5.  Compare applied (of a subject, etc) studied in its theoretical aspects rather than for its practical applications: pure mathematics; pure science
6.  (of a vowel) pronounced with more or less unvarying quality without any glide; monophthongal
7.  (of a consonant) not accompanied by another consonant
8.  of supposedly unmixed racial descent
9.  genetics, biology breeding true for one or more characteristics; homozygous
10.  music
 a.  (of a sound) composed of a single frequency without overtones
 b.  (of intervals in the system of just intonation) mathematically accurate in respect to the ratio of one frequency to another
 
[C13: from Old French pur, from Latin pūrus unstained]
 
'pureness
 
n

Collins English Dictionary - Complete & Unabridged 10th Edition
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Etymonline
Word Origin & History

pure
c.1300, "unmixed," also "absolutely, entirely," from O.Fr. pur (12c.), from L. purus "clean, clear, unmixed, chaste," from PIE base *peu-/*pu- "to purify, cleanse" (cf. L. putus "clear, pure," Skt. pavate "purifies, cleanses," putah "pure," M.Ir. ur "fresh, new," O.H.G. fowen "to sift"). Replaced O.E.
hlutor. Meaning "free from moral corruption" is first recorded c.1340. In ref. to bloodlines, attested from c.1475 (pureblood (n.) is recorded from 1882). Purist first recorded 1706, on model of Fr. puriste (1586), originally in ref. to speech.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

pure (pyur)
adj. pur·er, pur·est

  1. Having a homogeneous or uniform composition; not mixed.

  2. Free from adulterants or impurities.

  3. Produced by self-fertilization or continual inbreeding; homozygous.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Example sentences
Rainwater can be wonderfully pure when it falls through unpolluted air directly
  into a clean, properly constructed container.
Some kinds of arbitrage are completely risk-free-this is pure arbitrage.
To more than two billion people, fresh, pure water is more valuable than gold.
There needs to be national standards and a national goal of pure
  science--science where no one, nor any corporation benefits.
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