\ ˈbərch-
\
\
Medical Definition of birch oil
: an essential oil that consists chiefly of methyl salicylate and is obtained from the bark and twigs of the sweet birch (Betula lenta)
— called also betula oil, sweet-birch oil
— compare oil of wintergreenLearn More About birch oil
Cite this Entry
“Birch oil.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/birch%20oil. Accessed 21 May. 2022.
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