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To scrape or beat with the forefoot. His hot courser pawed the Hungarian plane. Tickell.

let fall from a fixed point upon the straight lines tangent to a given curve, or upon the planes tangent to a given surface. -- Pedal note (Mus.), the note which is held or sustained through an organ point. See Organ point, under Organ. -- Pedal organ (Mus.), an organ which has pedals or a range of keys moved by the…

A plane figure having five angles, and, consequently, five sides; any figure having five angles. Regular pentagon, a pentagon in which the angles are all equal, and the sides all equal.

It is sometimes, but rarely, used of the nearest points of other orbits, as of a comet, a planet, etc. Called also epigee, epigeum.

That point of the orbit of a planet or comet which is nearest to the sun; -- opposed to Ant: aphelion.

volution; proceeding in a series of successive circuits; as, the periodical motion of the planets round the sun.

The region surrounding a moving body, such as the wing of a bird or a gliding aëroplane, within which cyclic or vortical motion of the air occur.

Exactly upright or vertical; pointing to the zenith; at right angles to the plane of the horizon; extending in a right line from any point toward the center of the earth.

Pertaining to the art, or in accordance with the laws, of perspective. Perspective 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 ob…

me force additional to that which causes its regular motion; as, the perturbations of the planets are caused by their attraction on each other. Newcomb.

Of or pertaining to perturbation, esp. to the perturbations of the planets. "The perturbational theory." Sir J. Herschel.

ct to quantity of illumination or form of enlightened disk; as, the phases of the moon or planets. See Illust. under Moon.

The planet Venus, when appearing as the morning star; Lucifer. [Poetic] Pope. Tennyson.

ent of two photographic cameras, the plates of which may be brought into exactly the same plane, used in surveying and map making. From the differences between two pictures taken at the same moment, measurements in all dimensions of the region may be obtained.

; to pick up news.(c) to acquire (an infectious disease); as, to pick up a cold on the airplane. (d) To meet (a person) and induce to accompany one; as, to pick up a date at the mall. [See several other defs in MW10]

A plane parallel to two of the crystalline axes.

is where the two sloping sides with the span form an equilateral triangle. -- Pitch of a plane (Carp.), the slant of the cutting iron. -- Pitch pipe, a wind instrument used by choristers in regulating the pitch of a tune. -- Pitch point (Gearing), the point of contact of the pitch lines of two gears, or of a rack an…

Having an oblique spiral arrangement of planes, as levogyrate and dextrogyrate crystals.

Without elevations or depressions; flat; level; smooth; even. See Plane. The crooked shall be made straight, and the rough places plain. Isa. xl. 4.

A draught or form; properly, a representation drawn on a plane, as a map or a chart; especially, a top view, as of a machine, or the representation or delineation of a horizontal section of anything, as of a building; a graphic representation; a diagram.