olfactory

[ol-fak-tuh-ree, -tree, ohl-]
adjective
1.
of or pertaining to the sense of smell: olfactory organs.
noun, plural olfactories.
2.
Usually, olfactories. an olfactory organ.

Origin:
1650–60; < Latin olfactōrius, equivalent to olfac(ere) to smell at, sniff (ol(ēre) to smell (akin to odor) + facere to make, do) + -tōrius -tory1

olfactorily, adverb
nonolfactory, adjective, noun, plural nonolfactories.
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
olfactory (ɒlˈfæktərɪ, -trɪ)
 
adj
1.  of or relating to the sense of smell
 
n , -ries
2.  (usually plural) an organ or nerve concerned with the sense of smell
 
[C17: from Latin olfactus, past participle of olfacere, from olere to smell + facere to make]

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

olfactory
1658, from L. olfactorius, from olfactus, pp. of olfacere "to get the smell of, sniff," from olere "give off a smell of" (see odor) + facere "make" (see factitious).
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

olfactory ol·fac·to·ry (ŏl-fāk'tə-rē, -trē, ōl-)
adj.
Of, relating to, or contributing to the sense of smell.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
olfactory   (ŏl-fāk'tə-rē, ōl-)  Pronunciation Key 
Relating to or involving the organs or sense of smell.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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American Heritage
Cultural Dictionary
olfactory [(ol-fak-tuh-ree, ohl-fak-tuh-ree)]

A descriptive term for the sense of smell.

The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Example sentences
The size and intensity of these sniffs turn out to be important gauges of
  olfactory ability.
In particular, the role of perfume as an olfactory disguise is obvious.
Olfactory receptors, the proteins responsible for the sense of smell, are
  notoriously difficult to isolate in the lab.
The information gathered by these cells is relayed to the mouth via a process
  called olfactory referral.
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