Definition of accessory pigment
: any of various pigments (such as carotenoids and phycobilins) that are found in photosynthetic cells and absorb light of wavelengths not absorbed by chlorophyll a Algae at deep regions receive mostly green and blue light and must have special accessory pigments capable of absorbing these wavelengths efficiently. — James D. Mauseth, Botany: An Introduction to Plant Biology, 2009 ◆The light energy absorbed by accessory pigments must be transferred to chlorophyll a before it can be used in photosynthesis.
Love words? You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.
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!
First Known Use of accessory pigment
Seen and Heard
What made you want to look up accessory pigment? Please tell us where you read or heard it (including the quote, if possible).