thymol blue

noun

Medical Definition of thymol blue

: a greenish crystalline compound C27H30O5S derived from thymol and used as an acid-base indicator

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“Thymol blue.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/thymol%20blue. Accessed 8 Mar. 2021.

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