| 单词 | trihedral quoin |
| 释义 | > as lemmastrihedral quoin trihedral angle or trihedral quoin, a solid angle formed by three surfaces meeting at a point. ΘΚΠ the world > space > shape > angularity > specific angular shape > [adjective] > triangular > pyramidal or triangular in section pyramidalc1450 trigonal1571 pyramidate1572 pyramidical1599 pyramidy1627 pyramical1633 triangular1644 pyramidated1745 triquetrous1752 trihedral angle1789 pyramoidal1883 the world > relative properties > number > geometry > shape or figure > [adjective] > three-dimensional > having number of faces > trihedral trihedral angle1789 the world > relative properties > number > geometry > shape or figure > [adjective] > three-dimensional > with particular section or base > triangular trigonal1571 trihedral angle1789 triquadrantal1896 1789 A. Crawford in Med. Communications 2 355 Obtuse trihedral pyramids. 1812 H. Davy Elements Chem. Philos. 125 Thus 6 particles may compose an octoedron or triedral prism. 1841 Todd's Cycl. Anat. & Physiol. III. 267/2 The inferior molars are..divided into two triedral portions. 1878 H. P. Gurney Crystallogr. 85 The trihedral quoins of the rhombic dodecahedron. 1880 T. H. Huxley Crayfish iii. 116 Each of these joints is trihedral, the outer face being convex; the inner, flat; and the upper concave. < as lemmas |
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