cilia

[ sil-ee-uh ]
/ ˈsɪl i ə /

plural noun, singular cil·i·um [sil-ee-uhm]. /ˈsɪl i əm/.

Biology. minute hairlike organelles, identical in structure to flagella, that line the surfaces of certain cells and beat in rhythmic waves, providing locomotion to ciliate protozoans and moving liquids along internal epithelial tissue in animals.
Anatomy. the eyelashes.

Origin of cilia

1705–15; New Latin, plural of cilium eyelash, Latin: upper eyelid, perhaps a back formation from supercilium eyebrow; see supercilium
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

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British Dictionary definitions for cilia

cilia
/ (ˈsɪlɪə) /

noun

the plural of cilium
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012