[spi.ro.gy.ra] n [NL, fr. L spira + Gk gyros ring, circle] (1875): any of a genus (Spirogyra) of freshwater green algae with spiral chloroplasts
SPIROGYRA
Meaning of SPIROGYRA in English
Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012