triakis-comb. form

Stress is usually determined by a subsequent element and vowels may be reduced accordingly. Some degree of stress is always maintained on the first syllable. If the subsequent element is an existing word, it is likely to retain its original stress pattern, e.g. triakisoctahedron Brit.

/ˌtrʌɪəkɪsɒktəˈhiːdrən/, U.S.

/ˌtraɪəkᵻsˌɑktəˈhidrən/.

Origin: A borrowing from Greek. Etymon: Greek τριάκις.

Etymology: < ancient Greek τριάκις three times, alteration (after τετράκις four times: see tetrakis- comb. form) of τρίς three times (see tris- comb. form).

representing Greek τριάκις thrice; used in combination in Geometry and Crystallography in ˌtriakisˌicosaˈhedron, triakisoctahedron, ˌtriakisˌtetraˈhedron (plural in all cases -hedra) names of solids derived respectively from the icosahedron, octahedron, and tetrahedron by erecting a triangular pyramid on each face, thus multiplying the original number of faces by three. (In Geometry specially applied to those forms in which the pyramids are of such altitude as to make all the solid angles regular.) Hence in derived adjectives, as ˌtriakisˌoctaˈhedrid.

ΘΚΠ

the world > relative properties > number > geometry > shape or figure > [noun] > three-dimensional > formed by converting faces to pyramids

triakistetrahedron1878

the world > relative properties > number > geometry > shape or figure > [adjective] > three-dimensional > having number of faces > having twenty-four faces

tetrahexahedral1816

triakisoctahedrid1878

trisoctahedral1891

1878 H. P. Gurney Crystallogr. 89 The form..called the triakisoctahedron.

1895 N. Story-Maskelyne Crystallogr. vii. §174. 199 The triakisoctahedron or octahedrid pyramidion..the more acute the pyramidion the more nearly it approximates in aspect to a rhomb-dodecahedron.

1895 N. Story-Maskelyne Crystallogr. vii. §187. 220 Triakisoctahedrid forms met with in combination.

1895 N. Story-Maskelyne Crystallogr. vii. §189. 224 The triakistetrahedra..(tetrahedrid pyramidia).

This entry has not yet been fully updated (first published 1914; most recently modified version published online March 2022).

单词	triakis-
释义	triakis-comb. form Stress is usually determined by a subsequent element and vowels may be reduced accordingly. Some degree of stress is always maintained on the first syllable. If the subsequent element is an existing word, it is likely to retain its original stress pattern, e.g. triakisoctahedron Brit. /ˌtrʌɪəkɪsɒktəˈhiːdrən/, U.S. /ˌtraɪəkᵻsˌɑktəˈhidrən/. Origin: A borrowing from Greek. Etymon: Greek τριάκις. Etymology: < ancient Greek τριάκις three times, alteration (after τετράκις four times: see tetrakis- comb. form) of τρίς three times (see tris- comb. form). representing Greek τριάκις thrice; used in combination in Geometry and Crystallography in ˌtriakisˌicosaˈhedron, triakisoctahedron, ˌtriakisˌtetraˈhedron (plural in all cases -hedra) names of solids derived respectively from the icosahedron, octahedron, and tetrahedron by erecting a triangular pyramid on each face, thus multiplying the original number of faces by three. (In Geometry specially applied to those forms in which the pyramids are of such altitude as to make all the solid angles regular.) Hence in derived adjectives, as ˌtriakisˌoctaˈhedrid. ΘΚΠ the world > relative properties > number > geometry > shape or figure > [noun] > three-dimensional > formed by converting faces to pyramids triakistetrahedron1878 the world > relative properties > number > geometry > shape or figure > [adjective] > three-dimensional > having number of faces > having twenty-four faces tetrahexahedral1816 triakisoctahedrid1878 trisoctahedral1891 1878 H. P. Gurney Crystallogr. 89 The form..called the triakisoctahedron. 1895 N. Story-Maskelyne Crystallogr. vii. §174. 199 The triakisoctahedron or octahedrid pyramidion..the more acute the pyramidion the more nearly it approximates in aspect to a rhomb-dodecahedron. 1895 N. Story-Maskelyne Crystallogr. vii. §187. 220 Triakisoctahedrid forms met with in combination. 1895 N. Story-Maskelyne Crystallogr. vii. §189. 224 The triakistetrahedra..(tetrahedrid pyramidia). This entry has not yet been fully updated (first published 1914; most recently modified version published online March 2022). < comb. form1878
随便看	hirsuted hirsuteness hirsutenesses hirsuter hirsutest hirsuties hirsutism hirsutisms hirsuto hirsuto- hirsuto-atrous hirsuto-rufous hirsutoatrous hirsutorufous hirudin hirudinal hirudinean hearing of hearing out hearing say hearing-day hearing-distance hearing-ear dog hearing-fee hearing-impaired