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olfactory

American  
[ol-fak-tuh-ree, -tree, ohl-] / ɒlˈfæk tə ri, -tri, oʊl- /

adjective

  1. of or relating to the sense of smell.

    olfactory organs.


noun

plural

olfactories
  1. Usually olfactories. an olfactory organ.

  2. olfactory nerve.

olfactory British  
/ -trɪ, ɒlˈfæktərɪ /

adjective

  1. of or relating to the sense of smell

"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

noun

  1. (usually plural) an organ or nerve concerned with the sense of smell

"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
olfactory Scientific  
/ ŏl-făktə-rē,ōl- /
  1. Relating to or involving the organs or sense of smell.


olfactory Cultural  
  1. A descriptive term for the sense of smell.


Other Word Forms

  • nonolfactory adjective
  • olfactorily adverb

Etymology

Origin of olfactory

1650–60; < Latin olfactōrius, equivalent to olfac ( ere ) to smell at, sniff ( ol ( ēre ) to smell (akin to odor ) + facere to make, do) + -tōrius -tory 1

Explanation

Something olfactory has to do with the sense of smell. The odor from that factory is a symphony of olfactory delights. Not. Though we typically think of dogs as the olfactory champions of the world, what with their remarkable ability to sniff out practically anything, the true title belongs to the polar bear. Healthy, adult polar bears possess olfactory gifts that boggle the mind: they can smell a seal under the ice from over a kilometer away. One way to try to remember the meaning of the word olfactory is to think of factory. Your nose is the "factory" where odors are processed. What visual is to the eyes, olfactory is to the nose.

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Vocabulary lists containing olfactory

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The olfactory bulb, located in the forebrain, processes signals from scent receptors in the nose.

From Science Daily • Apr. 11, 2026

Then the team hopes to treat the problem by placing sensor chips in the patient’s olfactory tissue to help preserve or restore scent perception.

From The Wall Street Journal • Mar. 17, 2026

Village dogs showed enriched wolf ancestry in olfactory receptor genes, which may support their need to locate human food waste.

From Science Daily • Nov. 29, 2025

There are brain cells that represent entire concepts, some with an affinity for visual information and others for olfactory input.

From Salon • Apr. 25, 2025

This happened often enough that it interrupted the proper workings of Mig’s olfactory senses.

From "The Tale of Despereaux: Being the Story of a Mouse, a Princess, Some Soup and a Spool of Thread" by Kate DiCamillo