| 释义 |
triacontad|traɪəˈkɒntæd|
[ad. Gr. τριᾱκοντάς, -αδ-, f. τριάκοντα thirty.]
The number thirty, or a set of thirty. So triacontaëterid |-ɛˈtɪərɪd| [ad. Gr. τριακονταετηρίς, -ιδ, f. τριακονταετής adj. of or for thirty years], a period of thirty years, or a festival recurring every thirty years; triacontahedral |-ˈhiːdrəl, -ˈhɛdrəl| a. [Gr. ἕδρα base, side], contained by thirty faces, esp. by thirty rhombs, as a crystal; triaˈcontarchy (triak-) Anc. Gr. Hist. [ad. Gr. τριακονταρχία, f. ἀρχή rule], the rule of the Thirty at Athens (see thirty A. 1 c); triaconter |traɪəˈkɒntə(r)| [ad. Gr. τριακοντήρης], an ancient Greek galley with thirty oars.
1621Bp. R. Montagu Diatribæ 258 Their Ogdoades, Duo⁓decads, *Triacontads,..and all the æones, blasphemous speculations.
1839Fraser's Mag. XX. 202 The *Triacontaëterid of the pillar of Rosetta—the grand period of the Panegyres, or festivals of the gods, which returned each thirty years. Ibid. 328 The great triacontaëterid or panegyry of the resurrection.
1805–17R. Jameson Char. Min. (ed. 3) 201 A Crystal is said to be..*Triacontahedral when its surface consists of thirty rhombs.
1852Grote Greece ii. lxxii. IX. 259 Isokrates, who speaks with indignant horror of these Dekarchies,..denounces those features which they had in common with the *Triakontarchy at Athens.
1859Rawlinson Herodotus iv. cxlviii. III. 124 Theras..took ship, and sailed, with three *triaconters, to join the descendants of Membliarus. Note, Triaconters were vessels of 30 oars, 15 on each side.
Add: triacontaˈhedron n., a triacontahedral solid.
1939*Triacontahedron [see icosidodecahedron n.].1986Nature 6 Nov. 49/2 The triacontahedron is known to be the basic volume of the three-dimensional Penrose tiling. |