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tar-acid oil

noun
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Definition of tar-acid oil

: an oil containing usually 10 to 55 percent of tar acids obtained by distilling coal tar or by dissolving tar acids in coal-tar oils — compare carbolic oil

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“Tar-acid oil.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/tar-acid%20oil. Accessed 29 Oct. 2020.

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