pyrrole

noun pyr·role \ ˈpir-ˌōl \
Updated on: 18 Mar 2018

Definition of pyrrole

: a toxic liquid heterocyclic compound C4H5N that has a ring consisting of four carbon atoms and one nitrogen atom, polymerizes readily in air, and is the parent compound of many biologically important substances (such as bile pigments, porphyrins, and chlorophyll); broadly : a derivative of pyrrole

pyrrolic

play \pi-ˈrō-lik\ adjective

Recent Examples of pyrrole from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'pyrrole.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Origin and Etymology of pyrrole

Greek pyrrhos


Medical Dictionary

pyrrole

noun pyr·role \ ˈpi(ə)r-ˌōl \

medical Definition of pyrrole

: a toxic liquid heterocyclic compound C4H5N that has a ring consisting of four carbon atoms and one nitrogen atom, polymerizes readily in air, and is the parent compound of many biologically important substances (as bile pigments, porphyrins, and chlorophyll); broadly : a derivative of pyrrole

pyrrolic

play \pir-ˈō-lik\ adjective

Learn More about pyrrole


Seen and Heard

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

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

WORD OF THE DAY

without deliberation, pause, or delay

Get Word of the Day daily email!

Test Your Vocabulary

Odd Habits and Quirks Quiz

  • image1926873504
  • Which of the following best describes an easily irritated person?
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
Bee Cubed

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

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!