eucalyptol
noun
eu·ca·lyp·tol
ˌyü-kə-ˈlip-ˌtȯl 
-ˌtōl
-ˌtōl
variants
or less commonly eucalyptole
: a liquid C10H18O with an odor of camphor that occurs in many essential oils (as of eucalyptus) and is used especially as an expectorant and flavoring agent
called also cineole
Examples of eucalyptol in a Sentence
Recent Examples on the Web
Terpenes such as eucalyptol—found in some strains—are traditionally associated with decongestant effects, potentially easing respiratory discomfort.
—
Tribune Content Agency, Mercury News, 3 Apr. 2025
Dosage Eucalyptus oil is composed of up to 70% eucalyptol (1,8-cineole).
—Merve Ceylan, Health, 13 Oct. 2024
The eucalyptol in Bread Beauty’s Scalp-Serum Exfoliating Treatment turns treatment day into a spa experience, thanks to subtle cooling that immediately relieves itchy, irritated scalps.
—Anamaria Glavan, Allure, 9 Nov. 2023
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Tribune Content Agency, Mercury News, 3 Apr. 2025
Dosage Eucalyptus oil is composed of up to 70% eucalyptol (1,8-cineole).
—Merve Ceylan, Health, 13 Oct. 2024
The eucalyptol in Bread Beauty’s Scalp-Serum Exfoliating Treatment turns treatment day into a spa experience, thanks to subtle cooling that immediately relieves itchy, irritated scalps.
—Anamaria Glavan, Allure, 9 Nov. 2023
Cite this Entry
“Eucalyptol.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/eucalyptol. Accessed 4 Nov. 2025.
Copy CitationMedical Definition
eucalyptol
noun
eu·ca·lyp·tol
variants
also eucalyptole
: a liquid C10H18O with an odor of camphor that occurs in many essential oils (as of eucalyptus) and is used especially as an expectorant and flavoring
called also cajeputol, cineole
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