[par.a.me.cium] n, pl -cia also -ciums [NL, fr. Gk paramekes oblong, fr. para- + mekos length; akin to Gk makros long--more at meager] (1752): any of a genus (Paramecium) of ciliate protozoans that have an elongate body rounded at the anterior end and an oblique funnel-shaped buccal groove bearing the mouth at the extremity
PARAMECIUM
Meaning of PARAMECIUM in English
Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012