parameciumn.

Brit.

/ˌparəˈmiːsɪəm/,

/ˌparəˈmiːʃ(ɪ)əm/, U.S.

/ˌpɛrəˈmisiəm/,

/ˌpɛrəˈmiʃ(i)əm/

Inflections: Plural paramecia, (rare) parameciums.

Forms: 1700s– paramecium, 1800s– paramaecium (irregular), 1900s– paramoecium (irregular).

Origin: A borrowing from Greek, combined with a borrowing from Latin. Etymons: Greek παραμήκης, Latin -ium.

Etymology: < ancient Greek παραμήκης oblong, oval ( < παρα- para- prefix¹ + μῆκος length (see meco- comb. form): with the formation compare classical Latin oblongus oblong adj.) + post-classical Latin -ium: see -y suffix⁴. Compare scientific Latin Paramecium, genus name (valid publication 1773, in form Paramaecium: see note below).

Zoology.

A protozoan of the genus Paramecium (class Oligohymenophora, phylum Ciliophora), comprising typically freshwater ciliates with a characteristic oblong or slipper shape; (in form Paramecium) the genus itself. Cf. slipper animalcule n. at slipper n. Compounds 2.Valid publication of the genus name (as Paramæcium): O. F. Müller Vermium Terrestrium et Fluviatilium (1773) I. i. 54.

ΘΚΠ

the world > animals > invertebrates > protozoa > class Infusoria > subclass Ciliata > [noun] > order Holotricha > genus Paramecium

paramecium1752

1752 J. Hill Gen. Nat. Hist. III. 4 The Paramecium, with an oblong, voluble body, obtuse at each end.

1855 Rep. Brit. Assoc. Advancem. Sci. 1854 ii. 105 He figures the animal covered with cilia very much longer than what the mere inspection of the living Paramæcium would justify.

1876 Amer. Naturalist 10 643 A drop from an organic infusion swarming with Paramecia.

1883 H. Drummond Nat. Law in Spiritual World (1884) 211 By the repeated subdivisions of a single Paramecium, no fewer than 268,000,000 similar organisms might be produced in one month.

1911 New Phytologist 10 91 In such forms as Paramœcium the two conjugating cells are united only by a narrow bridge of protoplasm.

1947 Ann. Rev. Microbiol. 1 32 Another finding in this work with the paramecia may be of interest.

1956 Q. Rev. Biol. 31 39/2 He has taken prize-winning pictures of..parameciums in their mud puddles.

1993 G. Bear Moving Mars 211 Thick white billows wrapped its long oval form like a paramecium engulfed by an amoeba.

2000 C. Tudge Variety of Life ii. iii. 128 RNA studies now reveal a greater phylogenetic distance between a paramecium and a plasmodium than there is between a human being and an oak tree.

Derivatives

† paramecine adj. Obsolete rare Apparently only attested in dictionaries or glossaries.

ΚΠ

1890 Cent. Dict. 4279/3 Paramecine, resembling a slipper-animalcule; of or pertaining to the Parameciidæ.

This entry has been updated (OED Third Edition, June 2005; most recently modified version published online March 2022).

单词	paramecium
释义	parameciumn. Brit. /ˌparəˈmiːsɪəm/, /ˌparəˈmiːʃ(ɪ)əm/, U.S. /ˌpɛrəˈmisiəm/, /ˌpɛrəˈmiʃ(i)əm/ Inflections: Plural paramecia, (rare) parameciums. Forms: 1700s– paramecium, 1800s– paramaecium (irregular), 1900s– paramoecium (irregular). Origin: A borrowing from Greek, combined with a borrowing from Latin. Etymons: Greek παραμήκης, Latin -ium. Etymology: < ancient Greek παραμήκης oblong, oval ( < παρα- para- prefix¹ + μῆκος length (see meco- comb. form): with the formation compare classical Latin oblongus oblong adj.) + post-classical Latin -ium: see -y suffix⁴. Compare scientific Latin Paramecium, genus name (valid publication 1773, in form Paramaecium: see note below). Zoology. A protozoan of the genus Paramecium (class Oligohymenophora, phylum Ciliophora), comprising typically freshwater ciliates with a characteristic oblong or slipper shape; (in form Paramecium) the genus itself. Cf. slipper animalcule n. at slipper n. Compounds 2.Valid publication of the genus name (as Paramæcium): O. F. Müller Vermium Terrestrium et Fluviatilium (1773) I. i. 54. ΘΚΠ the world > animals > invertebrates > protozoa > class Infusoria > subclass Ciliata > [noun] > order Holotricha > genus Paramecium paramecium1752 1752 J. Hill Gen. Nat. Hist. III. 4 The Paramecium, with an oblong, voluble body, obtuse at each end. 1855 Rep. Brit. Assoc. Advancem. Sci. 1854 ii. 105 He figures the animal covered with cilia very much longer than what the mere inspection of the living Paramæcium would justify. 1876 Amer. Naturalist 10 643 A drop from an organic infusion swarming with Paramecia. 1883 H. Drummond Nat. Law in Spiritual World (1884) 211 By the repeated subdivisions of a single Paramecium, no fewer than 268,000,000 similar organisms might be produced in one month. 1911 New Phytologist 10 91 In such forms as Paramœcium the two conjugating cells are united only by a narrow bridge of protoplasm. 1947 Ann. Rev. Microbiol. 1 32 Another finding in this work with the paramecia may be of interest. 1956 Q. Rev. Biol. 31 39/2 He has taken prize-winning pictures of..parameciums in their mud puddles. 1993 G. Bear Moving Mars 211 Thick white billows wrapped its long oval form like a paramecium engulfed by an amoeba. 2000 C. Tudge Variety of Life ii. iii. 128 RNA studies now reveal a greater phylogenetic distance between a paramecium and a plasmodium than there is between a human being and an oak tree. Derivatives † paramecine adj. Obsolete rare Apparently only attested in dictionaries or glossaries. ΚΠ 1890 Cent. Dict. 4279/3 Paramecine, resembling a slipper-animalcule; of or pertaining to the Parameciidæ. This entry has been updated (OED Third Edition, June 2005; most recently modified version published online March 2022). < n.1752
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