| 释义 |
parallelepiped Geom.|ˌpærəlɛlˈɛpɪpɛd|
Earlier in Gr. form parallelepipedon |ˌpærəlɛlɪˈpɪpɪdɒn|, pl. -a. Often incorrectly 6–9 paralleli-, 7–9 parallelo- (whence ˌpærəlɛləʊˈpɪpɪd).
[ad. Gr. παραλληλεπίπεδον, f. παράλληλ-ος parallel + ἐπίπεδον plane surface, n. use of neut. of ἐπίπεδος plane, flat (f. ἐπί upon + πέδον ground). In late L. (Boethius) parallēlepipedus, F. parallélépipède (1570 in Hatz.-Darm.), often parallélipipède.]
A solid figure contained by six parallelograms, of which every two opposite ones are parallel; a prism whose base is a parallelogram.
α1570Billingsley Euclid xi. xxxi. 342 Parallelipipedons consisting vpon equall bases, and being vnder one and the selfe same altitude, are equall the one to the other. 1666Boyle Orig. Formes & Qual. (1667) 42 Though Spheres and Parallelopipedons differ but in shape. 1667Collins in Rigaud Corr. Sci. Men (1841) II. 479 By producing the planes of the parallelepipedons, so that their sides shall cut off (viz. each parallelepiped twelve) second segments in the whole equal. 1791Hamilton Berthollet's Dyeing I. i. iii. vii. 275 White crystals in flat parallelipipedons. 1857Birch Anc. Pottery (1858) I. 12 These bricks are all parallelopipeda, of Nile-mud or clay of a dark loamy colour, held together by chopped straw.
β1663Charleton Chor. Gigant. 21 Resembling Parallelipipeds, rather than Cylinders. 1667Parallelepiped [see α]. 1744Phil. Trans. XLIII. 29 This Parallelopipede Figure with oblique Angles is common to many Stones. 1812–16Playfair Nat. Phil. (1819) I. 183 If a rectangular parallelepiped float in a fluid. 1868Grove Contrib. Sc. in Corr. Phys. Forces (1874) 449 A slab of stone of a parallelopiped form. 1875Wonders Phys. World i. i. 31 These most frequently are cubes or rectangular parallelepipeds.
Hence parallelepipedal |-ɪˈpɪpɪdəl|, paralleleˈpipedonal (irreg.), paralleleˈpipedous adjs., having the form of a parallelepiped.
1754New & Compl. Dict. Arts & Sci. II. 1394/1 The capacities of all sorts of vessels.., as cubical, parallelopipedal, cylindrical,..&c. are computed. 1794Sullivan View Nat. I. 438 Cubic..or parallelepipedal forms. 1826Kirby & Sp. Entomol. IV. 267 Parallelopipedous, six-sided, with four parallelogramical and two quadrate sides. 1852Th. Ross Humboldt's Trav. I. xi. 368 Breaking into fragments of a parallelopipedal figure. 1890Century Dict., Parallelepipedonal. 1950L. R. Underwood Rolling of Metals I. iv. 83 If a rectangular network of lines on the bar before rolling is still rectangular after rolling, then the total deformation may be regarded as parallelopipedal. 1974Chem. Physics VI. 2/2 The term ‘unit cell’ will be retained here..to mean the parallelepipedal cell (whether primitive or multiple) used by crystallographers. |