The process of forming cilia or the state of having cilia; also refers to the arrangement and pattern of cilia on an organism.
From 'ciliate' plus the suffix '-ion' meaning 'the action or process of,' creating a noun describing the formation or condition of having cilia.
The pattern of cilia on different organisms is so distinctive that scientists can identify species by their ciliation pattern alone—it's like a ciliate's fingerprint, and it's a key feature used in taxonomy!
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