phenol-red

phe·nol·sul·fone·phthal·ein

[fee-nawl-suhl-fohn-thal-een, -ee-in, -fthal-, -nol-]
noun Chemistry.
a bright to dark red crystalline compound, C 1 9 H 1 4 O 5 S, slightly soluble in water, alcohol, and acetone: used as an acid-base indicator and as a diagnostic reagent in medicine.
Also called phenol red.


Origin:
phenol + sulfone + phthalein

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Based on the Random House Dictionary, © Random House, Inc. 2013.
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00:10
Phenol-red is always a great word to know.
So is interrobang. Does it mean:
a printed punctuation mark (‽), available only in some typefaces, designed to combine the question mark (?) and the exclamation point (!), indicating a mixture of query and interjection, as after a rhetorical question.
a fool or simpleton; ninny.
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