[ fee-nawl-suhl-fohn-thal-een, -ee-in, -fthal-, -nol- ]
/ ˌfi nɔlˌsʌl foʊnˈθæl in, -i ɪn, -ˈfθæl-, -nɒl- /

noun Chemistry.

a bright to dark red crystalline compound, C19H14O5S, slightly soluble in water, alcohol, and acetone: used as an acid-base indicator and as a diagnostic reagent in medicine.

Words nearby phenolsulfonephthalein

Origin of phenolsulfonephthalein

Also called phenol red. Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Medicine definitions for phenol red

phenol red


A bright to dark red, water-soluble crystalline dye used as an acid-base indicator and to test kidney function and renal blood flow.phenolsulfonphthalein
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.