† radiismn.

Origin: Formed within English, by derivation. Etymons: radiate adj., -ism suffix.

Etymology: < radi- (in radiate adj.) + -ism suffix. N.E.D. (1903) gives the pronunciation as (rēⁱ·diˌizm) /ˈreɪdɪɪzm/.

Zoology. Obsolete. rare.

Radial symmetry.

ΘΚΠ

the world > space > relative position > inclination > divergence > [noun] > radiating

deradiation1649

radiation1658

radiism1841

radialization1889

1841 E. Forbes Hist. Brit. Starfishes 141 Of equal importance to zoologist and geologist is the study of the Sea-Urchins: to the former they present the perfection of radiism, as well as the first steps towards a symmetrical or bilateral form.

1841 E. Forbes Hist. Brit. Starfishes 243 In the animals of which we have now to treat, Radiism sets and Annulism appears.

1856 Philos. Trans. (Royal Soc.) 146 424 The symmetry of the Rotifera is truly bilateral, the genera Stephanocerus and Floscularia alone retaining a lingering remnant of radiism.

This entry has been updated (OED Third Edition, June 2008; most recently modified version published online September 2021).

单词	radiism
释义	† radiismn. Origin: Formed within English, by derivation. Etymons: radiate adj., -ism suffix. Etymology: < radi- (in radiate adj.) + -ism suffix. N.E.D. (1903) gives the pronunciation as (rēⁱ·diˌizm) /ˈreɪdɪɪzm/. Zoology. Obsolete. rare. Radial symmetry. ΘΚΠ the world > space > relative position > inclination > divergence > [noun] > radiating deradiation1649 radiation1658 radiism1841 radialization1889 1841 E. Forbes Hist. Brit. Starfishes 141 Of equal importance to zoologist and geologist is the study of the Sea-Urchins: to the former they present the perfection of radiism, as well as the first steps towards a symmetrical or bilateral form. 1841 E. Forbes Hist. Brit. Starfishes 243 In the animals of which we have now to treat, Radiism sets and Annulism appears. 1856 Philos. Trans. (Royal Soc.) 146 424 The symmetry of the Rotifera is truly bilateral, the genera Stephanocerus and Floscularia alone retaining a lingering remnant of radiism. This entry has been updated (OED Third Edition, June 2008; most recently modified version published online September 2021). < n.1841
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