Definition of phorbin
1 : a magnesium-free compound C22H18N4 that is the parent of chlorophyll in that it contains the unsubstituted ring structure of chlorophyll consisting of one carbocyclic ring in addition to the porphin ring system
2 : any of several magnesium-free derivatives of chlorophyll (as pheophytin) that contain its characteristic ring structure — compare chlorin
Start your free trial today and get unlimited access to America's largest dictionary, with:
- More than 250,000 words that aren't in our free dictionary
- Expanded definitions, etymologies, and usage notes
- Advanced search features
- Ad free!
Origin and Etymology of phorbin
International Scientific Vocabulary phorb- (Greek phorbē pasture, fodder) + -in
Seen and Heard
What made you want to look up phorbin? Please tell us where you read or heard it (including the quote, if possible).