Definition of odorant in English:



  • A substance used to give a particular odour to a product.

    • ‘These genes are believed to accept aquatic odorants.’
    • ‘However, a natural flower oil may contain over 400 different odorants and there are more than 270 known constituents in rose oil.’
    • ‘In fact, all participants were given cotton pads without a specific odorant, although the pads themselves did have a mild odor.’
    • ‘Within the indoor environment, the perceived odor will often result from exposures to a mixture of several odorants.’
    • ‘They used four odorants: chocolate odor represented a food odor, and lavender represented a non-food odor that was similarly pleasant as chocolate.’
    • ‘She said it was particularly intriguing that odorants with related chemical structures showed highly similar patterns of activation in the cortex.’
    • ‘He said that this technology can also detect the sulfur-based odorants added to natural gas.’
    • ‘Therefore, the chemical composition of an odorant will determine the attractiveness of the odor to the searching organism in terms of its identity and quality.’
    • ‘However, rates of pilferage increased when either the substrate or the seeds were moistened, causing them to release more odorants.’
    • ‘Abstract Olfactory receptor neurons respond to odorants with characteristic patterns of action potentials that are relevant for odor coding.’
    • ‘Animals that reached the odorant or control were trapped by a spot of sodium azide.’
    • ‘The best way to identify gas in homes, which was naturally without smell, was by continuing the policy of adding an odorant, he added.’
    • ‘Furthermore, we were not able to evaluate the repeatability of participants' ratings of known odorants in this study.’
    • ‘The G-protein-coupled receptors sense various agonists such as photons, odorants, neurotransmitters, pheromones, and sugars.’
    • ‘Primary detection of odorants in the vomeronasal system occurs in the vomeronasal organ.’
    • ‘Because such an event could be life threatening, inserting an odorant into these gases is crucial to provide a warning of exposure.’
    • ‘The binding of a chemical cue to an odorant receptor activates G proteins initiating a signal transduction cascade that results in a behavioral response.’
    • ‘The extracellular signaling of hormones, light, and odorants is facilitated by a large family of G-protein-coupled receptors.’
    • ‘They don't say very much about the cleaning liquid except that it comprises alcohol, tensides, lubricants and odorants.’
    • ‘For virtually all animals, behavioral responses to odorants are essential for food localization, avoidance of noxious agents, and selection of reproductive partners.’


Late Middle English (as an adjective in the sense ‘odorous’): from Old French, present participle of odorer, from Latin odorare ‘give an odour to’. The current sense dates from the 1940s.