Moving by means of cilia, the tiny hair-like structures on cells that can propel organisms through liquid.
From Latin 'cilium' (eyelash) and 'gradus' (step, motion), combining scientific terms for cellular movement. The term emerged in biological taxonomy during the 19th century to describe protozoans and other microscopic organisms that locomote using cilia.
Ciliograde organisms like paramecia are basically using thousands of microscopic oars to row themselves through water—they're nature's original paddle-wheel boats, and they've been perfecting this design for billions of years!
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