noun any one of numerous species of ciliated infusoria belonging to vorticella and many other genera of the family vorticellidae. they have a more or less bell-shaped body with a circle of vibrating cilia around the oral disk. most of the species have slender, contractile stems, either simple or branched.
VORTICELLA
Meaning of VORTICELLA in English
Webster English vocab. Английский словарь Webster. 2012