| 单词 |
acicular |
| 释义 |
acicular, a.|əˈsɪkjʊlə(r)|
[ad. mod.L. aciculāris, f. acicula a small needle. See -ar.]
Needle-like; resembling a slender needle or bristle, as the leaves of pine-trees, and various crystals.
1794Pearson in Phil. Trans. LXXXIV. 396 Oxalic acid produced immediately a precipitation of white acicular crystals. 1836–9Todd Cycl. Anat. & Phys. II. 234/2 The phosphate..of lime [forms] small acicular prisms. 1848Dana Zooph. 449 With long acicular, and nearly naked branchlets. 1857H. Miller Test. of Rocks 496 Coniferous trees, that retain at all seasons their coverings of acicular spiky leaves. 1860Ruskin Mod. Paint. V. viii. iii. §5. 182 Their trees always had a tendency to congeal into little acicular thorn-hedges.
Add: Hence acicuˈlarity n.
1956Nature 17 Mar. 518/2 A further series of electron micrographs showed that during the reduction much of the acicularity of the particles was lost. 1982in D. Francois Adv. Fracture Res. III. 1209 The degree of acicularity was estimated by measuring the grain size and also by comparison of dislocation densities. |
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单词 acknowledgment 释义 acknowledgment|knldmnt|Also acknowledgement (a spelling more in a......