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TAKE THE QUIZcresol red
noun
: a dye C21H18O5S of the sulfonephthalein series derived from ortho-cresol that is obtained as a reddish brown crystalline powder and is used as an acid-base indicator
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Merriam-Webster unabridged
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- Before we went to her house, Hannah told us her aunt was a flibbertigibbet.


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