Definition of odorant in English:



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

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


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.