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单词 merostome
释义

merostomen.

Brit. /ˈmɪərəstəʊm/, /ˈmɛrəstəʊm/, U.S. /ˈmɛrəˌstoʊm/
Origin: Formed within English, by compounding; modelled on a Latin lexical item. Etymons: mero- comb. form2, -stome comb. form.
Etymology: < mero- comb. form2 + -stome comb. form, after scientific Latin Merostomata, (former) suborder name (J. D. Dana Crustacea (1852) i. 14). Compare French mérostomes, plural (1890).
Zoology.
A chelicerate arthropod of the class Merostomata, of which the horseshoe crab is the only extant member.
ΘΚΠ
the world > animals > invertebrates > phylum Arthropoda > order Xiphosura or Merostomata > [noun] > member of
xiphosure1837
sword-tail1858
xiphosuran1879
merostome1881
1881 Smithsonian Rep. 431 The Merostomes, i.e. the Horseshoe Crabs of the present epoch.
1900 Proc. Amer. Acad. Arts & Sci. 36 64 The track has a decided merostomatous appearance, but was probably made by a trilobite, as there are no Limuloid merostomes known to have existed in the Cambrian.
1966 McGraw-Hill Encycl. Sci. & Technol. (rev. ed.) VIII. 244/1 Merostomes are known from as early as Lower Cambrian.
1989 S. J. Gould Wonderful Life (1991) 112 The merostomes, or horseshoe-crab group.

Derivatives

† merostomous adj. Obsolete rare Apparently only attested in dictionaries or glossaries.
ΚΠ
1890 Cent. Dict. Merostomous, same as merostomatous.
This entry has been updated (OED Third Edition, September 2001; most recently modified version published online March 2022).
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n.1881
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