vorticella

noun, plural vor·ti·cel·lae [vawr-tuh–sel-ee] /ˌvɔr təˈsɛl i/, vor·ti·cel·las.

1. any ciliated protozoan of the genus Vorticella, having a transparent, bell-shaped body with a retractile stalk.

noun plural -lae (-liː)

1. any protozoan of the genus Vorticella, consisting of a goblet-shaped ciliated cell attached to the substratum by a long contractile stalk