| 释义 |
ovoid, a. and n. Chiefly Nat. Hist.|ˈəʊvɔɪd|
[ad. mod.L. ōvoīdēs, in F. ovoïde, f. L. ōv-um egg: see -oid.]
A. adj.
1. Resembling an egg, egg-shaped; oval with one end more pointed than the other.
a. Of a solid body. (The regular use.)
1828Stark Elem. Nat. Hist. II. 274 Dacne...Antennæ short, terminating abruptly in a perfoliated ovoid club. 1834McMurtrie Cuvier's Anim. Kingd. 362 The female..constructs an ovoid cocoon. 1880Bastian Brain ii. 28 The term ganglion is..commonly applied to any round or ovoid nodule containing nerve cells.
b. Of superficial figure.
1828Stark Elem. Nat. Hist. I. 210 Nostrils basal, ovoid, lateral. 1880H. A. A. Nicholls in Nature 19 Feb. 373/1 The crater is ovoid, with its long axis running in a direction from west-south-west to east-north-east.
2. Comb.: esp. with another adj., denoting modification of the form expressed by the latter, as ovoid-oblong.
1870Hooker Stud. Flora 337 Salix Capræa..catkins silky, male ovoid-oblong. 1892Daily News 14 Sept. 3/2 Among the curiosities in this department are bugles of paper and gutta-percha,..Hatsany's ovoid-shaped trumpet.
B. n. A body or figure of ovoid form.
1831R. Knox Cloquet's Anat. 413 The circumference of the cerebellum presents a distinct lobule, resembling a cuneiform segment of an ovoid. 1897Allbutt's Syst. Med. IV. 300 Oxalates are deposited in the urine in the form of oxalate of lime, which tends to crystallise either in octohedra or as dumb-bells or ovoids. |