- a big, thick-walled, transparent cell that develops at intervals over the filaments of certain cyanobacteria.
- A specialized nitrogen-fixing cellular formed by some filamentous cyanobacteria.
- A cell larger than the others, as well as different appearance, happening in a few algæ about nostoc.
- In botany, one of a class of abnormal cells found in algæ of the order Nostocaceæ.
Sentence for "heterocyst"
- To establish the first, Hoover showed…