A sedentary, single-celled aquatic animal with a contractile stalk and a bell-shaped body bearing a ring of cilia.
- ‘Among them are the bell-shaped protozoans called vorticellas that live in fresh or salt water, often in colonies that may contain between five and several hundred organisms.’
- ‘Although vorticellas are often found in clusters, each stalk is individually attached to the surface.’
- ‘On first visual inspection, the vorticella appeared as a small patch of fungus, about 8mm in diameter.’
Late 18th century: modern Latin, diminutive of Latin vortex, vortic- eddy.
We take a look at several popular, though confusing, punctuation marks.