nemathelminthn.

Brit.

/ˌnɛməˈθɛlmɪnθ/, U.S.

/ˌnɛməˈθɛlmənθ/

Inflections: Plural nemathelminthes, nemathelminths.

Forms: also with capital initial.

Origin: A borrowing from Latin; modelled on a Latin lexical item. Etymon: Latin Nemathelminthes.

Etymology: < scientific Latin Nemathelminthes, plural (C. Gegenbaur Grundzüge der Vergleichenden Anat. (1859) 137) < ancient Greek νήματ- , νῆμα thread (see nemato- comb. form) + ἑλμινθ- , ἕλμινς worm (see helminth n.), after earlier Nematelmia (1851). Compare French némathelminthes, plural (1874).

Zoology. Now rare.

Any member of a systematic group Nemathelminthes, comprising worms with unsegmented, round, pseudocoelomate bodies, including nematodes, nematomorphs, and (in some classifications) acanthocephalans and chaetognaths.These phyla are now more often included in a larger systematic group Aschelminthes (or Pseudocoelomata).

ΘΚΠ

the world > animals > invertebrates > subkingdom Metazoa > grade Triploblastica or Coelomata > phylum Nemathelminthes > [noun] > member of

threadworm1804

roundworm1837

nemathelminth1870

aschelminth1958

1870 G. Rolleston Forms Animal Life Introd. p. cxxxvii The Chaetognatha..have been here ranked with the Nematoidea and Acanthocephali as Nemathelminthes.

1890 Cent. Dict. Nemathelminth,..a member of the Nemathelminthes.

1896 A. E. Shipley in Cambr. Nat. Hist. II. vi. 124 In no Nemathelminth is there any closed vascular system, nor are special respiratory organs developed.

1913 Philos. Trans. (Royal Soc.) B. 203 55 The longest chromosomes that I have seen occur in the Nemathelminth, Ascaris megalocephala.

1925 Amer. Naturalist 59 514 From the point of view of the entrance of the nemathelminth parasite into its definitive host, one may point out two possible routes of invasion.

1936 H. L. Sweetman Biol. Control Insects v. 55 The nemathelminthes or roundworms include three groups of ordinal value: the Nematoda, the Nematomorpha, and the Acanthocephala.

Derivatives

ˌnemathelˈminthic adj. rare

ΘΚΠ

the world > animals > invertebrates > subkingdom Metazoa > grade Triploblastica or Coelomata > phylum Nemathelminthes > [adjective] > relating to nemathelminthes

nemathelminthic1890

aschelminth1951

1890 Cent. Dict. Nemathelminthic.

1951 Q. Rev. Biol. 26 4/1 Nemathelminthic galls occur on the roots, stems, leaves, and reproductive parts of many different species of plants.

This entry has been updated (OED Third Edition, September 2003; most recently modified version published online March 2022).

单词	nemathelminth
释义	nemathelminthn. Brit. /ˌnɛməˈθɛlmɪnθ/, U.S. /ˌnɛməˈθɛlmənθ/ Inflections: Plural nemathelminthes, nemathelminths. Forms: also with capital initial. Origin: A borrowing from Latin; modelled on a Latin lexical item. Etymon: Latin Nemathelminthes. Etymology: < scientific Latin Nemathelminthes, plural (C. Gegenbaur Grundzüge der Vergleichenden Anat. (1859) 137) < ancient Greek νήματ- , νῆμα thread (see nemato- comb. form) + ἑλμινθ- , ἕλμινς worm (see helminth n.), after earlier Nematelmia (1851). Compare French némathelminthes, plural (1874). Zoology. Now rare. Any member of a systematic group Nemathelminthes, comprising worms with unsegmented, round, pseudocoelomate bodies, including nematodes, nematomorphs, and (in some classifications) acanthocephalans and chaetognaths.These phyla are now more often included in a larger systematic group Aschelminthes (or Pseudocoelomata). ΘΚΠ the world > animals > invertebrates > subkingdom Metazoa > grade Triploblastica or Coelomata > phylum Nemathelminthes > [noun] > member of threadworm1804 roundworm1837 nemathelminth1870 aschelminth1958 1870 G. Rolleston Forms Animal Life Introd. p. cxxxvii The Chaetognatha..have been here ranked with the Nematoidea and Acanthocephali as Nemathelminthes. 1890 Cent. Dict. Nemathelminth,..a member of the Nemathelminthes. 1896 A. E. Shipley in Cambr. Nat. Hist. II. vi. 124 In no Nemathelminth is there any closed vascular system, nor are special respiratory organs developed. 1913 Philos. Trans. (Royal Soc.) B. 203 55 The longest chromosomes that I have seen occur in the Nemathelminth, Ascaris megalocephala. 1925 Amer. Naturalist 59 514 From the point of view of the entrance of the nemathelminth parasite into its definitive host, one may point out two possible routes of invasion. 1936 H. L. Sweetman Biol. Control Insects v. 55 The nemathelminthes or roundworms include three groups of ordinal value: the Nematoda, the Nematomorpha, and the Acanthocephala. Derivatives ˌnemathelˈminthic adj. rare ΘΚΠ the world > animals > invertebrates > subkingdom Metazoa > grade Triploblastica or Coelomata > phylum Nemathelminthes > [adjective] > relating to nemathelminthes nemathelminthic1890 aschelminth1951 1890 Cent. Dict. Nemathelminthic. 1951 Q. Rev. Biol. 26 4/1 Nemathelminthic galls occur on the roots, stems, leaves, and reproductive parts of many different species of plants. This entry has been updated (OED Third Edition, September 2003; most recently modified version published online March 2022). < n.1870
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