SINCE 1828
paraphenylenediamine
noun
para·phen·yl·ene·di·amine
| \-ˌfen-ᵊl-ˌēn-ˈdī-ə-ˌmēn
\
\
Medical Definition of paraphenylenediamine
: the para isomer of phenylenediamine that is used especially in dyeing hair and sometimes causes an allergic reaction
Comments on paraphenylenediamine
What made you want to look up paraphenylenediamine? Please tell us where you read or heard it (including the quote, if possible).
Test Your Vocabulary
Great Scrabble Words—A Quiz
-
- Which of the following Q-without-U words means the number five in cards or dice?
Test your vocabulary with our 10-question quiz!
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
-
Great Scrabble Words—A Quiz
Words to improve your Scrabble game
Take the quiz -
Which Came First? Quiz
Do you know which word is older?
Take the quiz -
How Strong Is Your Vocabulary?
Test your vocabulary with our 10-question quiz!
Take the quiz -
SCRABBLE® Sprint
SCRABBLE® fans, sharpen your skills!
Play the game
Share paraphenylenediamine
Resources for paraphenylenediamine