paramecium

/ˌpæ.ɹəˈmiː.si.əm/

Etymology

From Ancient Greek παραμήκης (paramḗkēs, “oval”), from μῆκος (mêkos, “length”).

noun

An oval-shaped protozoan organism of the genus Paramecium.“The sun beats on his eyelids; inside them a paramecium revolves. A blink and it changes pattern like a kaleidoscope.”