triacontadn.

/trʌɪəˈkɒntad/

Etymology: < Greek τριᾱκοντάς, -αδ-, < τριάκοντα thirty.

The number thirty, or a set of thirty.

ΘΚΠ

the world > relative properties > number > specific numbers > eleven to ninety-nine > [noun] > thirty > set of thirty

trental1508

triacontad1621

1621 R. Montagu Diatribæ Hist. Tithes 258 Their Ogdoades, Duo~decads, Triacontads,..and all the Æones, blasphemous speculations.

Derivatives

triacontaëterid n.

/traɪəˌkɒntərɪˈtɪərɪd/ [ < Greek τριακονταετηρίς, -ιδ, < τριακονταετής adjective, of or for thirty years] a period of thirty years, or a festival recurring every thirty years.

ΘΚΠ

society > leisure > social event > festive occasion > specific festivities > [noun] > other festivities

hoppingc1330

hocking1406

church ale1448

bid-alec1462

kirk-ale1543

maids' ale1547

quaff-tide1582

help-ale1587

clerk-ale1627

Chinese New Year1704

Rasa-yatra1767

spring festival1788

souling1813

gooding1818

walking day1826

yatra1827

triacontaëterid1839

pwe1842

Thomasing1847

hocking-ale1854

Mary-ale1857

Oktoberfest1859

Marymass1866

club-walking1874

Lag b'Omer1874

full moon festival1876

beerfest1877

Tanabata1880

Moon Festival1892

bierfest1908

sausage fest1908

Zar1931

rara1941

mas'1956

molimo1960

Kwanzaa1970

1839 Fraser's Mag. 20 202 The Triacontaëterid of the pillar of Rosetta—the grand period of the Panegyres, or festivals of the gods, which returned each thirty years.

1839 Fraser's Mag. 20 328 The great triacontaëterid or panegyry of the resurrection.

triacontahedral adj.

/traɪəˌkɒntəˈhiːdrəl/

/traɪəˌkɒntəˈhɛdrəl/ [ < Greek ἕδρα base, side] contained by thirty faces, esp. by thirty rhombs, as a crystal.

ΘΚΠ

the world > matter > chemistry > crystallography (general) > crystal (general) > specific crystal forms > [adjective] > miscellaneous others

secondary1816

trapezian1816

triacontahedral1816

tri-dodecahedral1816

tri-hexahedral1816

tri-octahedral1816

tri-rhomboidal1816

octodecimal1817

octoduodecimal1817

octosexdecimal1817

pentahexahedral1817

octahedrala1824

trigonal1878

pinacoidal1879

tetartopyramid1891

trisoctahedral1891

tetartohexagonal1895

tetartosystematic1895

1816 R. Jameson Treat. External Characters Minerals (ed. 2) 196 A Crystal is..Tria-contahedral..when its surface consists of thirty rhombs.

triaˈcontarchy n. (also triakontarchy) [ < Greek τριακονταρχία, < ἀρχή rule] Ancient Greek History the rule of the Thirty at Athens (see thirty adj. 1c).

ΘΚΠ

society > authority > rule or government > a or the system of government > specific regimes > [noun] > in ancient Athens

triacontarchy1852

1852 G. Grote Hist. Greece IX. ii. lxxii. 259 Isokrates, who speaks with indignant horror of these Dekarchies,..denounces those features which they had in common with the Triakontarchy at Athens.

triaconter n.

/traɪəˈkɒntə(r)/ [ < Greek τριακοντήρης] an ancient Greek galley with thirty oars.

ΘΚΠ

society > travel > travel by water > vessel, ship, or boat > vessels propelled by oars or poles > [noun] > vessels propelled by oars and sails > galley > with specific number of banks of oars

quinquereme1553

quadrireme1587

trireme1601

pentereme1656

biremea1680

unireme1699

octeresa1703

octoreme1799

triaconter1859

1859 G. Rawlinson tr. Herodotus Hist. III. iv. cxlviii. 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.

Draft additions 1993

triacontaˈhedron n. a triacontahedral solid.

ΘΚΠ

the world > relative properties > number > geometry > shape or figure > [noun] > three-dimensional > with fourteen or more faces

icosahedron1570

icosidodecahedron1570

icosaeder1656

chiliahedron1690

tetrahexahedron1816

icositetrahedron1831

trisoctahedron1837

pentahexahedron1857

hexakisoctahedron1878

tetrakaidekahedron1894

triacontahedron1939

1939 H. S. M. Coxeter Ball's Math. Recreations & Ess. (ed. 11) v. 136 The compound of five cubes has the 30 facial planes of a triacontahedron. Reciprocally, the compound of five octahedra has the 30 vertices of an icosidodecahedron.

1986 Nature 6 Nov. 49/2 The triacontahedron is known to be the basic volume of the three-dimensional Penrose tiling.

This entry has not yet been fully updated (first published 1914; most recently modified version published online March 2020).

单词	triacontad
释义	triacontadn. /trʌɪəˈkɒntad/ Etymology: < Greek τριᾱκοντάς, -αδ-, < τριάκοντα thirty. The number thirty, or a set of thirty. ΘΚΠ the world > relative properties > number > specific numbers > eleven to ninety-nine > [noun] > thirty > set of thirty trental1508 triacontad1621 1621 R. Montagu Diatribæ Hist. Tithes 258 Their Ogdoades, Duo~decads, Triacontads,..and all the Æones, blasphemous speculations. Derivatives triacontaëterid n. /traɪəˌkɒntərɪˈtɪərɪd/ [ < Greek τριακονταετηρίς, -ιδ, < τριακονταετής adjective, of or for thirty years] a period of thirty years, or a festival recurring every thirty years. ΘΚΠ society > leisure > social event > festive occasion > specific festivities > [noun] > other festivities hoppingc1330 hocking1406 church ale1448 bid-alec1462 kirk-ale1543 maids' ale1547 quaff-tide1582 help-ale1587 clerk-ale1627 Chinese New Year1704 Rasa-yatra1767 spring festival1788 souling1813 gooding1818 walking day1826 yatra1827 triacontaëterid1839 pwe1842 Thomasing1847 hocking-ale1854 Mary-ale1857 Oktoberfest1859 Marymass1866 club-walking1874 Lag b'Omer1874 full moon festival1876 beerfest1877 Tanabata1880 Moon Festival1892 bierfest1908 sausage fest1908 Zar1931 rara1941 mas'1956 molimo1960 Kwanzaa1970 1839 Fraser's Mag. 20 202 The Triacontaëterid of the pillar of Rosetta—the grand period of the Panegyres, or festivals of the gods, which returned each thirty years. 1839 Fraser's Mag. 20 328 The great triacontaëterid or panegyry of the resurrection. triacontahedral adj. /traɪəˌkɒntəˈhiːdrəl//traɪəˌkɒntəˈhɛdrəl/ [ < Greek ἕδρα base, side] contained by thirty faces, esp. by thirty rhombs, as a crystal. ΘΚΠ the world > matter > chemistry > crystallography (general) > crystal (general) > specific crystal forms > [adjective] > miscellaneous others secondary1816 trapezian1816 triacontahedral1816 tri-dodecahedral1816 tri-hexahedral1816 tri-octahedral1816 tri-rhomboidal1816 octodecimal1817 octoduodecimal1817 octosexdecimal1817 pentahexahedral1817 octahedrala1824 trigonal1878 pinacoidal1879 tetartopyramid1891 trisoctahedral1891 tetartohexagonal1895 tetartosystematic1895 1816 R. Jameson Treat. External Characters Minerals (ed. 2) 196 A Crystal is..Tria-contahedral..when its surface consists of thirty rhombs. triaˈcontarchy n. (also triakontarchy) [ < Greek τριακονταρχία, < ἀρχή rule] Ancient Greek History the rule of the Thirty at Athens (see thirty adj. 1c). ΘΚΠ society > authority > rule or government > a or the system of government > specific regimes > [noun] > in ancient Athens triacontarchy1852 1852 G. Grote Hist. Greece IX. ii. lxxii. 259 Isokrates, who speaks with indignant horror of these Dekarchies,..denounces those features which they had in common with the Triakontarchy at Athens. triaconter n. /traɪəˈkɒntə(r)/ [ < Greek τριακοντήρης] an ancient Greek galley with thirty oars. ΘΚΠ society > travel > travel by water > vessel, ship, or boat > vessels propelled by oars or poles > [noun] > vessels propelled by oars and sails > galley > with specific number of banks of oars quinquereme1553 quadrireme1587 trireme1601 pentereme1656 biremea1680 unireme1699 octeresa1703 octoreme1799 triaconter1859 1859 G. Rawlinson tr. Herodotus Hist. III. iv. cxlviii. 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. Draft additions 1993 triacontaˈhedron n. a triacontahedral solid. ΘΚΠ the world > relative properties > number > geometry > shape or figure > [noun] > three-dimensional > with fourteen or more faces icosahedron1570 icosidodecahedron1570 icosaeder1656 chiliahedron1690 tetrahexahedron1816 icositetrahedron1831 trisoctahedron1837 pentahexahedron1857 hexakisoctahedron1878 tetrakaidekahedron1894 triacontahedron1939 1939 H. S. M. Coxeter Ball's Math. Recreations & Ess. (ed. 11) v. 136 The compound of five cubes has the 30 facial planes of a triacontahedron. Reciprocally, the compound of five octahedra has the 30 vertices of an icosidodecahedron. 1986 Nature 6 Nov. 49/2 The triacontahedron is known to be the basic volume of the three-dimensional Penrose tiling. This entry has not yet been fully updated (first published 1914; most recently modified version published online March 2020). < n.1621
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