# phycocyanobilin

> English word · Noun

## Definitions
1. A blue phycobilin present in the phycobiliproteins allophycocyanin and phycocyanin, of which it is the terminal acceptor of energy.

## Etymology
From phyco- + cyano- + bilin.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/phycocyanobilin