methylene blue
noun
: a basic thiazine dye C16H18ClN3S·3H2O used especially as a biological stain, an antidote in cyanide poisoning, and an oxidation-reduction indicator
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To gauge the fat content of the cream brought by farmers, the dairy would insert methylene blue in a sample and waited for its lactic acid to dissolve the color.
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Joseph Berger, BostonGlobe.com, 10 Jan. 2023
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Joseph Berger, BostonGlobe.com, 10 Jan. 2023
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“Methylene blue.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/methylene%20blue. Accessed 22 Nov. 2024.
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