in botany, a genus of the triandra monogyne clas. The calyx consists of five leaves; the corolla is wanting; and the capsule has one cell, and many seeds. There is but one species; a native of Spain.

Orthodox, in church-history, an appellation given to those who are found in all the articles of the Christian faith.

Orthographic projection of the sphere, that wherein the eye is supposed at an infinite distance; so called, because the perpendiculars from any point of the sphere will all fall in the common intersection of the sphere, with the plane of the projection.