© 2026 Sloth Lingo. Learn easy. Lounge wisely.

phycocyanin

Upper-Intermediate (B2)

IPA: /faɪkoʊˈsaɪənɪn/

KK: /faɪkoʊˈsaɪənɪn/

noun
Definition

A type of blue pigment found in certain bacteria, especially cyanobacteria, that helps in photosynthesis.


Example

Phycocyanin is responsible for the blue color in many species of cyanobacteria.


Conversation
Sloth A
Have you heard about the benefits of phycocyanin?
Sloth B
Yeah, I read it’s a great antioxidant found in blue-green algae.
Sloth A
Exactly! It’s fascinating how it helps with inflammation too.
Sloth B
I should try some supplements; it sounds really healthy.

Synonyms & Antonyms
Synonyms
pigment
protein
bilin
Antonyms
Root Explanation

Phycocyanin is formed from "phyco-" (from Greek "phykon", meaning seaweed) and "cyanin" (from Greek "kyanos", meaning dark blue). The word refers to a blue pigment derived from certain types of algae, specifically seaweed.

Memory Tip

Think of 'seaweed' ('phyco-') and its 'dark blue' color ('cyanin') to remember that phycocyanin is a blue pigment found in algae.

Visually Confused Words
pyocyanin
phyllocyanin
pyoctanin
Is this page helpful?