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conditioner

[kuh n-dish-uh-ner] /kənˈdɪʃ ə nər/
noun
1.
a person or thing that conditions.
2.
something added to a substance to increase its usability, as a water softener.
3.
a cream or liquid preparation applied to the hair or skin, especially for its emollient qualities.
4.
a trainer of athletes.
6.
Textiles. a person who conditions fibers or fabrics.
Origin of conditioner
1590-1600
1590-1600; condition + -er1
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for conditioner

conditioner

/kənˈdɪʃənə/
noun
1.
a person or thing that conditions
2.
a substance, esp a cosmetic, applied to something to improve its condition: hair conditioner
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for conditioner
n.

c.1600, "a bargainer," agent noun from condition (v.). Meaning "an agent that brings something into good condition" is from 1888; since c.1960 usually in reference to hair care products. For about 20 years before that, it often was short for air conditioner.

Online Etymology Dictionary, © 2010 Douglas Harper
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14
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