Radiolarian.

Brit.

/ˌreɪdɪə(ʊ)ˈlɛːrɪə/, U.S.

/ˌreɪdiəˈlɛriə/

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

Etymology: < scientific Latin Radiolaria, group name (J. Müller 1858, in Physikalischen Abhandl. der Königlich. Akad. der Wissensch. zu Berlin (1859) 16; adopted, with amended application, in Haeckel Die Radiolarien (1862)) < post-classical Latin radiolus (see radiole n.) + -aria -ary suffix¹. Compare German Radiolarien, plural noun (1862 in Haeckel), French radiolaires, plural noun (1862 in a report on Haeckel's book), both after scientific Latin.

Zoology.

With plural and singular agreement. (In form Radiolaria) a group of protozoans comprising the radiolarians; (also radiolaria) animals of this group (collectively or individually).The group was formerly ranked as an order or a class, and at first included heliozoans as well as the marine forms now called radiolarians. In most modern schemes it does not constitute a formal taxon, the radiolarians being divided between three of the four classes of Actinopoda (the fourth comprising the heliozoans).

ΘΚΠ

the world > animals > invertebrates > protozoa > class Sarcodina > order Radiolaria > [noun]

Radiolaria1868

1868 Proc. Royal Soc. 17 190 The coccoliths and coccospheres are imbedded in a living expanse of protoplasmic substance, to which they bear the same relation as the spicules of Sponges or of Radiolaria do to the soft parts of those animals.

1872 H. A. Nicholson Man. Palæontol. 66 The order Radiolaria is defined as comprising those members of the Rhizopoda which possess a siliceous test or siliceous spicules.

1895 A. Harker Petrol. xix. 252 In the transparent parts the radiolaria shew as shadowy circles defined by their interior being somewhat lighter than the surrounding matrix.

1911 Encycl. Brit. XXII. 803/1 Living Radiolaria were first observed and partially described by W. J. Tilesius in 1803–6 and 1814.

1995 Sci. News 11 Nov. 309/2 In the case of radiolaria, one model of skeletal formation posits that organisms secrete silica into a network of ‘bubblelike alveoli’.

This entry has been updated (OED Third Edition, June 2008; most recently modified version published online March 2022).

单词	radiolaria
释义	Radiolarian. Brit. /ˌreɪdɪə(ʊ)ˈlɛːrɪə/, U.S. /ˌreɪdiəˈlɛriə/ Origin: A borrowing from Latin. Etymon: Latin Radiolaria. Etymology: < scientific Latin Radiolaria, group name (J. Müller 1858, in Physikalischen Abhandl. der Königlich. Akad. der Wissensch. zu Berlin (1859) 16; adopted, with amended application, in Haeckel Die Radiolarien (1862)) < post-classical Latin radiolus (see radiole n.) + -aria -ary suffix¹. Compare German Radiolarien, plural noun (1862 in Haeckel), French radiolaires, plural noun (1862 in a report on Haeckel's book), both after scientific Latin. Zoology. With plural and singular agreement. (In form Radiolaria) a group of protozoans comprising the radiolarians; (also radiolaria) animals of this group (collectively or individually).The group was formerly ranked as an order or a class, and at first included heliozoans as well as the marine forms now called radiolarians. In most modern schemes it does not constitute a formal taxon, the radiolarians being divided between three of the four classes of Actinopoda (the fourth comprising the heliozoans). ΘΚΠ the world > animals > invertebrates > protozoa > class Sarcodina > order Radiolaria > [noun] Radiolaria1868 1868 Proc. Royal Soc. 17 190 The coccoliths and coccospheres are imbedded in a living expanse of protoplasmic substance, to which they bear the same relation as the spicules of Sponges or of Radiolaria do to the soft parts of those animals. 1872 H. A. Nicholson Man. Palæontol. 66 The order Radiolaria is defined as comprising those members of the Rhizopoda which possess a siliceous test or siliceous spicules. 1895 A. Harker Petrol. xix. 252 In the transparent parts the radiolaria shew as shadowy circles defined by their interior being somewhat lighter than the surrounding matrix. 1911 Encycl. Brit. XXII. 803/1 Living Radiolaria were first observed and partially described by W. J. Tilesius in 1803–6 and 1814. 1995 Sci. News 11 Nov. 309/2 In the case of radiolaria, one model of skeletal formation posits that organisms secrete silica into a network of ‘bubblelike alveoli’. This entry has been updated (OED Third Edition, June 2008; most recently modified version published online March 2022). < n.1868
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