Noun: phenolphthalein ,fee-n(u)l'they,leen
- A laxative used in many preparations under various trade names; also used as an acid-base indicator in titrations involving weak acids and strong bases because it is brilliant red at high alkalinity and colourless below pH 8
"The chemistry student used phenolphthalein as an indicator in the titration experiment"
Derived forms: phenolphthaleins
Type of: acid-base indicator, laxative
Encyclopedia: Phenolphthalein