Per-spēc'tive1, a.
a. [Fr. perspectif, Pr. perspectiv, Sp. perspectivo, from Lat. perspicere, perspectum, to look through, from the prefix per, through, and spicere, to look.]
Sense 1. Pertaining to the science of optics, or vision; optical. [Obs.] Bacon.
Sense 2. Pertaining to the art, or in accordance with the laws, of perspective.
Perspective plane, the plane on which the representation is made, distinguished from the ground plane, which is that on which the objects are represented as standing. When this plane is oblique to the principal face of the object, the perspective is called oblique perspective; when parallel to that face, parallel perspective.