noun Date: 1872 a large transparent thick-walled cell that is found in the filaments of some cyanobacteria and is the site of nitrogen fixation, ~ous adjective
HETEROCYST
Meaning of HETEROCYST in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012