Word.ws English Dictionary

Plural of paramecium

irregular plural

The plural of paramecium is paramecia or parameciums.

Forms of paramecium

Singularparamecium /ˌpæ.ɹəˈmiː.si.əm/
Pluralparamecia
parameciums
Countablecountable

Paramecia and parameciums in a sentence

  • The little figures made him think of paramecia, sinister organisms with gullets and feeding grooves.1997, Don DeLillo, Underworld, 2003 edition, →ISBN, page 560
  • I know were I to pierce that hide I would undelve intestine, bolus, bile, blood, paramecia — and yet the breathing animal body bears more, which now I crave.1986, Michael Mayo, Practising angels. From the entry undelve

Meaning of paramecium

  1. noun An oval-shaped protozoan organism of the genus Paramecium.

Full definition of paramecium

Nouns ending in -um: plural -a

Questions about the plural of paramecium

What is the plural of paramecium?
The plural of paramecium is paramecia or parameciums.
Which is correct, paramecia or parameciums?
Both are used. paramecia is the more common of the two in English writing.
Is paramecium countable?
Paramecium is a countable noun.

Source and license

Adapted from Wiktionary: paramecium (page history and authors) and the entries of its forms. Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws left out forms marked obsolete, archaic, rare or dialectal and added the examples. Wiktionary data of 2026-09-02.

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