Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

protoporphyrin

play
noun pro·to·por·phy·rin \ˌprō-tō-ˈpȯr-f(ə-)rən\

Definition of protoporphyrin

  1. :  a purple porphyrin acid C34H34N4O4 obtained from hemin or heme by removal of bound iron



Origin of protoporphyrin

International Scientific Vocabulary


First Known Use: 1925


Medical Dictionary

protoporphyrin

play
noun pro·to·por·phy·rin \ˌprōt-ō-ˈpȯr-f(ə-)rən\

Medical Definition of protoporphyrin

  1. :  a purple porphyrin acid C34H34N4O4 obtained from hemin or heme by removal of bound iron




Learn More about protoporphyrin

  1. Medical Dictionary: Definition of "protoporphyrin"


Seen and Heard

What made you want to look up protoporphyrin? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

tending to dismiss important matters

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

alt-5746713d76276

Which of these is a synonym of nonplus?

perplex disapprove reduce soothe
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ