To save this word, you'll need to log in.
thy·mol·phtha·lein | \ -ˈthal-ˌēn, -ˈthā-ˌlēn, -ˈthal-ē-ən 
\
\Medical Definition of thymolphthalein
: a crystalline compound C28H30O4 analogous to phenolphthalein and likewise used as an acid-base indicator
Comments on thymolphthalein
What made you want to look up thymolphthalein? Please tell us where you read or heard it (including the quote, if possible).
Test Your Vocabulary
Intact Latin Quiz
- What did focus mean in Latin?
Can you spell these 10 commonly misspelled words?
TAKE THE QUIZ
Test Your Knowledge - and learn some interesting things along the way.
TAKE THE QUIZLove words? Need even more definitions?
Merriam-Webster unabridgedWords at Play
Ask the Editors
Word Games
- Intact Latin Quiz
What did each of these words mean to ancient Romans?
Take the quiz - The Eponym Quiz
Do you know these words that come from names?
Take the quiz - Spell It
Can you spell these 10 commonly misspelled words?
Take the quiz - Citation
Do you know the person or title these quotes describe?
Play the game
Share thymolphthalein