Polythalamian.

Brit.

/ˌpɒlɪθəˈleɪmɪə/, U.S.

/ˈˌpɑliθəˈleɪmiə/

Origin: A borrowing from Latin. Etymon: Latin Polythalamia.

Etymology: < scientific Latin Polythalamia ( C. G. Ehrenberg Die Infusionsthierchen als vollkommene Organismen (1838) 136; in use earlier as adjective ( A. Soldani Testaceographiae ac zoophytographiae parvae et microscopicae (1789) I. 35), and as a specific name of some annelids ( Linnaeus Systema naturæ (ed. 12, 1767) 1266)) < poly- poly- comb. form + thalamium or its elements ancient Greek θάλαμος inner chamber (see thalamus n.) and scientific Latin -ium (see -y suffix⁴); compare -ia suffix². Compare scientific Latin polythalamium (see polythalamaceous adj.).

Zoology. Now rare.

With plural agreement. A former division of rhizopods with polythalamous shells, which included most foraminiferans; (also polythalamia) animals of this division (collectively or individually).

ΚΠ

1844 Amer. Jrnl. Sci. 47 117 Prof. Bailey remarked that the Polythalamia attached to Ostrea selliæformis from South Carolina are not similar to those in decided eocene marls from Virginia.

1858 M. F. Maury Physical Geogr. Sea (new ed.) xiii. 264 Polythalamia are abundant in the Arctic Seas.

1873 J. L. Smith Mineral. & Chem. 173 The polythalamia, to whose labors South Carolina owes so large a part of her territory, are still at work in countless thousands upon her coasts.

1906 M. Hartog in Cambr. Nat. Hist. I. iii. 64 In the ‘Polythalamia’ new chambers are formed by the excess of the protoplasm emerging and surrounding itself with shell.

1940 G. S. Carter Gen. Zool. Invertebr. iv. 81 The rhizopodia of the Foraminifera Polythalamia are also filamentous. They anastomose strongly.

1953 Systematic Zool. 2 58 (heading) Monothalamia... Polythalamia.

This is a new entry (OED Third Edition, September 2006; most recently modified version published online March 2022).

单词	polythalamia
释义	Polythalamian. Brit. /ˌpɒlɪθəˈleɪmɪə/, U.S. /ˈˌpɑliθəˈleɪmiə/ Origin: A borrowing from Latin. Etymon: Latin Polythalamia. Etymology: < scientific Latin Polythalamia ( C. G. Ehrenberg Die Infusionsthierchen als vollkommene Organismen (1838) 136; in use earlier as adjective ( A. Soldani Testaceographiae ac zoophytographiae parvae et microscopicae (1789) I. 35), and as a specific name of some annelids ( Linnaeus Systema naturæ (ed. 12, 1767) 1266)) < poly- poly- comb. form + thalamium or its elements ancient Greek θάλαμος inner chamber (see thalamus n.) and scientific Latin -ium (see -y suffix⁴); compare -ia suffix². Compare scientific Latin polythalamium (see polythalamaceous adj.). Zoology. Now rare. With plural agreement. A former division of rhizopods with polythalamous shells, which included most foraminiferans; (also polythalamia) animals of this division (collectively or individually). ΚΠ 1844 Amer. Jrnl. Sci. 47 117 Prof. Bailey remarked that the Polythalamia attached to Ostrea selliæformis from South Carolina are not similar to those in decided eocene marls from Virginia. 1858 M. F. Maury Physical Geogr. Sea (new ed.) xiii. 264 Polythalamia are abundant in the Arctic Seas. 1873 J. L. Smith Mineral. & Chem. 173 The polythalamia, to whose labors South Carolina owes so large a part of her territory, are still at work in countless thousands upon her coasts. 1906 M. Hartog in Cambr. Nat. Hist. I. iii. 64 In the ‘Polythalamia’ new chambers are formed by the excess of the protoplasm emerging and surrounding itself with shell. 1940 G. S. Carter Gen. Zool. Invertebr. iv. 81 The rhizopodia of the Foraminifera Polythalamia are also filamentous. They anastomose strongly. 1953 Systematic Zool. 2 58 (heading) Monothalamia... Polythalamia. This is a new entry (OED Third Edition, September 2006; most recently modified version published online March 2022). < n.1844
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