单词 | acranial |
释义 | acranialadj. Medicine and Zoology. Affected with acrania; lacking (part of) the skull. Also: = acraniate adj. (rare). ΘΚΠ the world > animals > chordates > [adjective] > lacking a skull or acraniate acranial1831 acraniate1876 1831 J. Pancoast tr. J. F. Lobstein Treat. Human Sympathetic Nerve i. iii. 51 Thus in a full grown acranial [L. acranio] fœtus with a double hare lip, the two sympathetic nerves were complete in all their parts. 1870 G. Rolleston Forms Animal Life 32 In all Vertebrata, with the exception of the Amphioxus, which is hence called ‘Acranial’, the neural canal widens considerably in the anterior region of the body. 1906 J. R. Angell Psychology (ed. 3) ii. 20 Even in the lowest forms of vertebrates, e.g., the acranial amphioxus, we find both a brain and cord. 1913 Amer. Jrnl. Obstetr. & Dis. Women & Children 68 136 We often find fetuses of the acranial type living for several days after birth. 1961 T. A. Goudge Ascent of Life v. vi. 195 Contemplation of the activities of disease-producing bacteria and viruses, of cancer cells, of acardiac and acranial monsters, of cretins and pituitary dwarfs, does not suggest the presence of purpose, but rather its absence. 2009 Clin. Dysmorphol. 18 201 The second case was an acardiac and acranial fetus with complete trisomy 2. This entry has been updated (OED Third Edition, December 2011; most recently modified version published online March 2022). < adj.1831 |
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