isogonal, a. (n.)
(aɪˈsɒgənal)
[f. as prec. + -al1: cf. hexagonal, etc.]
1. = isogonic a.1 and n.
| 1857 Whewell Hist. Induct. Sc. (ed. 3) III. 52 The values of these elements at any given time..can be expressed by charts of the earth's surface, on which are drawn the isodynamic, isogonal, and isoclinal curves. Ibid. 54 The isogonal curves may be looked upon as deformations of the curves deduced by Euler from the supposition of two poles. |
2. Having equal angles, equiangular.
| 1878 Gurney Crystallogr. 21 When the angles between every two adjacent planes lying in one zone are equal to each other they constitute an isogonal (or equal-angled) zone. |