PARABOLIC; PARABOLICAL a. 3 definitions
lic spindle, the solid generated by revolving the portion of a parabola cut off by a line drawn at right angles to the axis of the curve, about that line as an axis. -- Parabolic spiral, a spiral curve conceived to be formed by the periphery of a semiparabola when its axis is wrapped about a circle; also, any other sp…
PARALLAX n. 2 definitions
parallax of a body with reference to the sun, or the angle subtended at the body by lines drawn from it to the earth and sun; as, the heliocentric parallax of a planet. -- Horizontal parallax, the geocentric parallx of a heavenly body when in the horizon, or the angle subtended at the body by the earth's radius. -- O…
PARALLEL a. 16 definitions
connecting rod. See Illust. of Locomotive, in App. -- Parallel ruler, an instrument for drawing parallel lines, so constructed as to have the successive positions of the ruling edge parallel to each other; also, one consisting of two movable parts, the opposite edges of which are always parallel. -- Parallel sailing…
PEEL v. 7 definitions
To strip off the skin, bark, or rind of; to strip by drawing or tearing off the skin, bark, husks, etc.; to flay; to decorticate; as, to peel an orange. The skillful shepherd peeled me certain wands. Shak.
PEN n. 9 definitions
A female swan. [Prov. Eng.] Bow pen. See Bow-pen. -- Dotting pen, a pen for drawing dotted lines. -- Drawing, or Ruling, pen, a pen for ruling lines having a pair of blades between which the ink is contained. -- Fountain pen, Geometric pen. See under Fountain, and Geometric. -- Music pen, a pen having five points f…
PERSPECTIVE a. 7 definitions
rspective plane, the plane or surface on which the objects are delineated, or the picture drawn; the plane of projection; -- 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 obli…
PERSUADE v. 6 definitions
To influence or gain over by argument, advice, entreaty, expostulation, etc.; to draw or incline to a determination by presenting sufficient motives. Almost thou persuadest me to be a Christian. Acts xxvi. 28. We will persuade him, be it possible. Shak.