【医】 立体角, 点角

[ noun ]
an angle formed by three or more planes intersecting at a common point (the vertex)
<noun.shape>

Solid \Sol"id\ (s[o^]l"[i^]d), a. [L. solidus, probably akin to
sollus whole, entire, Gr. ???: cf. F. solide. Cf.
{Consolidate},{Soda}, {Solder}, {Soldier}, {Solemn}.]
1. Having the constituent parts so compact, or so firmly
adhering, as to resist the impression or penetration of
other bodies; having a fixed form; hard; firm; compact; --
opposed to {fluid} and {liquid} or to {plastic}, like
clay, or to {incompact}, like sand.

2. Not hollow; full of matter; as, a solid globe or cone, as
distinguished from a {hollow} one; not spongy; dense;
hence, sometimes, heavy.

3. (Arith.) Having all the geometrical dimensions; cubic; as,
a solid foot contains 1,728 solid inches.

Note: In this sense, cubics now generally used.

4. Firm; compact; strong; stable; unyielding; as, a solid
pier; a solid pile; a solid wall.

5. Applied to a compound word whose parts are closely united
and form an unbroken word; -- opposed to {hyphened}.

6. Fig.: Worthy of credit, trust, or esteem; substantial, as
opposed to {frivolous} or {fallacious}; weighty; firm;
strong; valid; just; genuine.

The solid purpose of a sincere and virtuous answer.
--Milton.

These, wanting wit, affect gravity, and go by the
name of solid men. --Dryden.

The genius of the Italians wrought by solid toil
what the myth-making imagination of the Germans had
projected in a poem. --J. A.
Symonds.

7. Sound; not weakly; as, a solid constitution of body. --I.
Watts.

8. (Bot.) Of a fleshy, uniform, undivided substance, as a
bulb or root; not spongy or hollow within, as a stem.

9. (Metaph.) Impenetrable; resisting or excluding any other
material particle or atom from any given portion of space;
-- applied to the supposed ultimate particles of matter.

10. (Print.) Not having the lines separated by leads; not
open.

11. United; without division; unanimous; as, the delegation
is solid for a candidate. [Polit. Cant. U.S.]

{Solid angle}. (Geom.) See under {Angle}.

{Solid color}, an even color; one not shaded or variegated.


{Solid green}. See {Emerald green}
(a), under {Green}.

{Solid measure} (Arith.), a measure for volumes, in which the
units are each a cube of fixed linear magnitude, as a
cubic foot, yard, or the like; thus, a foot, in solid
measure, or a solid foot, contains 1,728 solid inches.

{Solid newel} (Arch.), a newel into which the ends of winding
stairs are built, in distinction from a hollow newel. See
under {Hollow}, a.

{Solid problem} (Geom.), a problem which can be construed
geometrically, only by the intersection of a circle and a
conic section or of two conic sections. --Hutton.

{Solid square} (Mil.), a square body or troops in which the
ranks and files are equal.

Syn: Hard; firm; compact; strong; substantial; stable; sound;
real; valid; true; just; weighty; profound; grave;
important.

Usage: {Solid}, {Hard}. These words both relate to the
internal constitution of bodies; but hardnotes a more
impenetrable nature or a firmer adherence of the
component parts than solid. Hard is opposed to soft,
and solid to fluid, liquid, open, or hollow. Wood is
usually solid; but some kinds of wood are hard, and
others are soft.

Repose you there; while I [return] to this hard
house,
More harder than the stones whereof 't is
raised. --Shak.

I hear his thundering voice resound,
And trampling feet than shake the solid ground.
--Dryden.


Angle \An"gle\ ([a^][ng]"g'l), n. [F. angle, L. angulus angle,
corner; akin to uncus hook, Gr. 'agky`los bent, crooked,
angular, 'a`gkos a bend or hollow, AS. angel hook, fish-hook,
G. angel, and F. anchor.]
1. The inclosed space near the point where two lines meet; a
corner; a nook.

Into the utmost angle of the world. --Spenser.

To search the tenderest angles of the heart.
--Milton.

2. (Geom.)
(a) The figure made by. two lines which meet.
(b) The difference of direction of two lines. In the lines
meet, the point of meeting is the vertex of the angle.

3. A projecting or sharp corner; an angular fragment.

Though but an angle reached him of the stone.
--Dryden.

4. (Astrol.) A name given to four of the twelve astrological
``houses.'' [Obs.] --Chaucer.

5. [AS. angel.] A fishhook; tackle for catching fish,
consisting of a line, hook, and bait, with or without a
rod.

Give me mine angle: we 'll to the river there.
--Shak.

A fisher next his trembling angle bears. --Pope.

{Acute angle}, one less than a right angle, or less than
90[deg].

{Adjacent} or {Contiguous angles}, such as have one leg
common to both angles.

{Alternate angles}. See {Alternate}.

{Angle bar}.
(a) (Carp.) An upright bar at the angle where two faces of
a polygonal or bay window meet. --Knight.
(b) (Mach.) Same as {Angle iron}.

{Angle bead} (Arch.), a bead worked on or fixed to the angle
of any architectural work, esp. for protecting an angle of
a wall.

{Angle brace}, {Angle tie} (Carp.), a brace across an
interior angle of a wooden frame, forming the hypothenuse
and securing the two side pieces together. --Knight.

{Angle iron} (Mach.), a rolled bar or plate of iron having
one or more angles, used for forming the corners, or
connecting or sustaining the sides of an iron structure to
which it is riveted.

{Angle leaf} (Arch.), a detail in the form of a leaf, more or
less conventionalized, used to decorate and sometimes to
strengthen an angle.

{Angle meter}, an instrument for measuring angles, esp. for
ascertaining the dip of strata.

{Angle shaft} (Arch.), an enriched angle bead, often having a
capital or base, or both.

{Curvilineal angle}, one formed by two curved lines.

{External angles}, angles formed by the sides of any
right-lined figure, when the sides are produced or
lengthened.

{Facial angle}. See under {Facial}.

{Internal angles}, those which are within any right-lined
figure.

{Mixtilineal angle}, one formed by a right line with a curved
line.

{Oblique angle}, one acute or obtuse, in opposition to a
right angle.

{Obtuse angle}, one greater than a right angle, or more than
90[deg].

{Optic angle}. See under {Optic}.

{Rectilineal} or {Right-lined angle}, one formed by two right
lines.

{Right angle}, one formed by a right line falling on another
perpendicularly, or an angle of 90[deg] (measured by a
quarter circle).

{Solid angle}, the figure formed by the meeting of three or
more plane angles at one point.

{Spherical angle}, one made by the meeting of two arcs of
great circles, which mutually cut one another on the
surface of a globe or sphere.

{Visual angle}, the angle formed by two rays of light, or two
straight lines drawn from the extreme points of an object
to the center of the eye.

{For Angles of commutation}, {draught}, {incidence},
{reflection}, {refraction}, {position}, {repose}, {fraction},
see {Commutation}, {Draught}, {Incidence}, {Reflection},
{Refraction}, etc.