| Plano- |
Combining forms signifying flat, level, plane; as planifolious, planimetry, plano-concave. |
a. |
| Plano- |
See Plani-. |
|
| Plano-conical |
Plane or flat on one side, and conical on the other. |
a. |
| Plano-convex |
Plane or flat on one side, and convex on the other; as, a plano-convex lens. See Convex, and Lens. |
a. |
| Plano-horizontal |
Having a level horizontal surface or position. |
a. |
| Plano-orbicular |
Plane or flat on one side, and spherical on the other. |
a. |
| Plano-subulate |
Smooth and awl-shaped. See Subulate. |
a. |
| Concave |
Hollow and curved or rounded; vaulted; -- said of the interior of a curved surface or line, as of the curve of the of the inner surface of an eggshell, in opposition to convex; as, a concave mirror; the concave arch of the sky. |
a. |
| Concave |
Hollow; void of contents. |
a. |
| Concave |
A hollow; an arched vault; a cavity; a recess. |
n. |
| Concave |
A curved sheath or breasting for a revolving cylinder or roll. |
n. |
| Concave |
To make hollow or concave. |
v. t. |
| Concavo-concave |
Concave or hollow on both sides; double concave. |
a. |
| Convexo-concave |
Convex on one side, and concave on the other. The curves of the convex and concave sides may be alike or may be different. See Meniscus. |
a. |