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Represented or formed by depressions in the general surface; as, diaglyphic sculpture or engraving; -- opposed to anaglyphic.

A tendency of leaves or other organs of plants to have their dorsal surface faced towards the rays of light.

ed for showing the time of day from the shadow of a style or gnomon on a graduated arc or surface; esp., a sundial; but there are lunar and astral dials. The style or gnomon is usually parallel to the earth's axis, but the dial plate may be either horizontal or vertical.

Pertaining to a diameter; diametrical. Diametral curve, Diametral surface (Geom.), any line or surface which bisects a system of parallel chords drawn in a curve or surface. -- Diametral planes (Crystal.), planes in which two of the axes lie.

Surface decoration of any sort which consists of the constant repetition of one or more simple figures or units of design evenly spaced.

The curve which on a given surface and with a given perimeter contains the greatest area. Tait.

To disappear gradually in another surface, as where moldings are lost in a sloped or curved face.

A figure with two sides or surfaces. Buchanan.

o dimensions, extension which has length and breadth, but no thickness; a plane or curved surface. -- Space of three dimensions, extension which has length, breadth, and thickness; a solid. -- Space of four dimensions, as imaginary kind of extension, which is assumed to have length, breadth, thickness, and also a fou…

A slight natural depression or indentation on the surface of some part of the body, esp. on the cheek or chin. Milton. The dimple of her chin. Prior.

the eye of an observer between a horizontal line and a tangent drawn from the eye to the surface of the ocean. -- Dip of the needle, or Magnetic dip, the angle formed, in a vertical plane, by a freely suspended magnetic needle, or the line of magnetic force, with a horizontal line; -- called also inclination. -- Dip…

disposed in the form of a prism, so that, by the reflections of the sun's rays from their surfaces, two images are presented to the eye, moving in opposite directions, and coinciding at the instant the sun's center is on the meridian.

director. Directer plane (Geom.), the plane to which all right-lined elements in a warped surface are parallel.

n of the curve generated by it; the line along which the generatrix moves in generating a surface.

The line of motion along which a describent line or surface is carried in the genesis of any plane or solid figure; a directrix. Hutton.

r discharging a Leyden jar, or electrical battery, by making a connection between the two surfaces; a discharging rod.

Want of continuity or cohesion; disunion of parts. "Discontinuity of surface." Boyle.

The whole surface of a leaf.

A friction clutch in which the gripping surfaces are disks or more or less resemble disks.

Any long, narrow receptacle for water on the surface of the earth.