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Definition of microcystin
microcystin
/ˌmaɪ.kroʊˈsɪs.tɪn/
mi · cro · cys · tin
Plural:microcystins
microcystin Lexical Profile
CEFR
C2
Grade
12
Tier
3
Usage
Rare
microcystin Game Scores & Validity
Scrabble US
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WWF
Wordle Guess
• noun
1
Any of a class of toxic cyclic peptide compounds produced by certain freshwater cyanobacteria (blue-green algae), known to cause severe liver damage upon ingestion.
Example
"Local authorities urged residents to avoid drinking from the lake after an extensive algal bloom caused elevated levels of microcystin in the water supply."
Synonyms
View all synonyms for microcystin• Rhymes for microcystin
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Word Origin & Etymology
Derived from the cyanobacteria genus name 'Microcystis' (from Greek 'mikros' meaning small and 'kustis' meaning bladder or pouch) combined with the chemical suffix '-in'.
Cite this Entry
Wordmom. (2026). Definition of Microcystin. In Wordmom Dictionary. Retrieved Oct 13, 2026, from https://wordmom.com/dictionary/microcystin