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Webster’s Dictionary (1828)



840 words match “ANGLE”

REENTER v.
To enter anew or again. Reëntering angle, an angle of a polygon pointing inward, as a, in the cut. -- Reëntering polygon, a polygon having one or more reëntering angles.
REENTRANT a.
Reëntering; pointing or directed inwardds; as, a re angle.
REFLECTING a.
ative; as, a reflecting mind. Reflecting circle, an astronomical instrument for measuring angless, like the sextant or Hadley's quadrant, by the reflection of light from two plane mirrors which it carries, and differing from the sextant chiefly in having an entire circle. -- Reflecting galvanometer, a galvanometer in…
REFLECTION n. 3 definitions
The return of rays, beams, sound, or the like, from a surface. See Angle of reflection, below. The eye sees not itself, But by reflection, by some other things. Shak.
REFRACTING a.
Serving or tending to refract; as, a refracting medium. Refracting angle of a prism (Opt.), the angle of a triangular prism included between the two sides through which the refracted beam passes in the decomposition of light. -- Refracting telescope. (Opt.) See under Telescope.
REFRACTION n.
heavenly body on account of atmospheric refraction, in order to obtain the true altitude. Angle of refraction (Opt.), the angle which a refracted ray makes with the perpendicular to the surface separating the two media traversed by the ray. -- Conical refraction (Opt.), the refraction of a ray of light into an infinit…
REFRACTIVE a.
vacuum. -- Relative refractive index (of two media) (Opt.), the ratio of the sine of the angle of incidence to the sine of the angle of refraction for a ray passing out of one of the media into the other.
REGMA n.
y fruit, consisting of three or more cells, each which at length breaks open at the inner angle.
REPEATING a.
n, under Magazine. -- Repeating instruments (Astron. & Surv.), instruments for observing angles, as a circle, theodolite, etc., so constructed that the angle may be measured several times in succession, and different, but successive and contiguous, portions of the graduated limb, before reading off the aggregate resul…
REPETITION n.
The measurement of an angle by successive observations with a repeating instrument.
REPLACEMENT n.
The removal of an edge or an angle by one or more planes.
REPOSE n.
nected parts, and also to anything which is overstrained; as, a painting may want repose. Angle of repose (Physics), the inclination of a plane at which a body placed on the plane would remain at rest, or if in motion would roll or side down with uniform velocity; the angle at which the various kinds of earth will stan…
RESOLVE v.
omplex ideas or obscure questions; to make clear or certain; to free from doubt; to disentangle; to unravel; to explain; hence, to clear up, or dispel, as doubt; as, to resolve a riddle. "Resolve my doubt." Shak. To the resolving whereof we must first know that the Jews were commanded to divorce an unbelieving Gentile.…
RETARDATION n.
t of retarding or delay. Retardation of the tide. (a) The lunitidal interval, or the hour angle of the moon at the time of high tide any port; the interval between the transit of the moon and the time of high tide next following. (b) The age of the tide; the retard of the tide. See under Retard, n.
RETIARY a.
Armed with a net; hence, skillful to entangle. Scholastic retiary versatility of logic. Coleridge.
RETIRADE n.
ter the defenses are dismantled. It usually consists of two faces which make a reëntering angle.
RETURN n.
The continuation in a different direction, most often at a right angle, of a building, face of a building, or any member, as a molding or mold; -- applied to the shorter in contradistinction to the longer; thus, a facade of sixty feet east and west has a return of twenty feet north and south.
REVERSE v.
osition of a soldier in which the piece passes between the right elbow and the body at an angle of 45°, and is held as in the illustration. -- To reverse an engine or a machine, to cause it to perform its revolutions or action in the opposite direction.
REVOLUTION n.
nd a moving surface a solid (called a solid of revolution); as, the revolution of a right-angled triangle about one of its sides generates a cone; the revolution of a semicircle about the diameter generates a sphere.
RHOMB n. 2 definitions
ogram, or quadrilateral figure whose sides are equal and the opposite sides parallel. The angles may be unequal, two being obtuse and two acute, as in the cut, or the angles may be equal, in which case it is usually called a square.
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