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diameter    音标拼音: [dɑɪ'æmətɚ]
n. 直径,径

直径,径

diameter
直径

diameter
直径

diameter
n 1: the length of a straight line passing through the center of
a circle and connecting two points on the circumference
[synonym: {diameter}, {diam}]
2: a straight line connecting the center of a circle with two
points on its perimeter (or the center of a sphere with two
points on its surface)

Diameter \Di*am"e*ter\, n. [F. diam[`e]tre, L. diametros, fr.
Gr. ?; dia` through ? measure. See {Meter}.]
1. (Geom.)
(a) Any right line passing through the center of a figure
or body, as a circle, conic section, sphere, cube,
etc., and terminated by the opposite boundaries; a
straight line which bisects a system of parallel
chords drawn in a curve.
(b) A diametral plane.
[1913 Webster]

2. The length of a straight line through the center of an
object from side to side; width; thickness; as, the
diameter of a tree or rock.
[1913 Webster]

Note: In an elongated object the diameter is usually taken at
right angles to the longer axis.
[1913 Webster]

3. (Arch.) The distance through the lower part of the shaft
of a column, used as a standard measure for all parts of
the order. See {Module}.
[1913 Webster]

{Conjugate diameters}. See under {Conjugate}.
[1913 Webster]

89 Moby Thesaurus words for "diameter":
air line, amplitude, area, axis, beeline, bigness, bisector, body,
bore, boundary, breadth, bulk, caliber, center, chord, core,
coverage, depth, diagonal, diaphragm, dimension, dimensions,
direct line, directrix, divider, edge, equator, expanse, expansion,
extension, extent, gauge, girth, great-circle course, greatness,
halfway mark, heart, height, interior, kernel, largeness, length,
line of demarcation, magnitude, mass, mean, measure, measurement,
median, middle, midmost, midriff, midst, normal, nucleus,
partition, perpendicular, proportion, proportions, radius,
radius vector, range, reach, right line, scale, scope, secant,
segment, semidiameter, shortcut, side, size, spread, straight,
straight course, straight line, straight stretch, straightaway,
streamline, tangent, thick, thick of things, transversal, vector,
volume, waist, waistline, width, zone


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  • Diameter - Wikipedia
    In geometry, a diameter of a circle is any straight line segment that passes through the centre of the circle and whose endpoints lie on the circle It can also be defined as the longest chord of the circle
  • Diameter of a Circle - Definition, Examples | Diameter Formula - Cuemath
    Diameter of a circle is any straight line segment that passes through the center of the circle and whose endpoints lie on the circumference of a circle Learn how to find the diameter of a circle using radius, circumference, and area
  • DIAMETER Definition Meaning - Merriam-Webster
    The meaning of DIAMETER is a chord passing through the center of a figure or body How to use diameter in a sentence
  • Diameter Definition (Illustrated Mathematics Dictionary) - Math is Fun
    Illustrated definition of Diameter: The distance from one point on a circle through the center to another point on the circle It is also the
  • DIAMETER | English meaning - Cambridge Dictionary
    DIAMETER definition: 1 (the length of) a straight line that reaches from one point on the edge of a round shape or… Learn more
  • Diameter of a Circle - BYJUS
    The properties of the diameter of a circle are as follows: The diameter is the longest chord of any circle The diameter divides the circle into two equal parts and thus produces two equal semicircles
  • Diameter Definition Meaning | Britannica Dictionary
    DIAMETER meaning: 1 : a straight line from one side of something (such as a circle) to the other side that passes through the center point; 2 : the distance through the center of something from one side to the other
  • DIAMETER definition and meaning | Collins English Dictionary
    The diameter of a circle or sphere is the length of a straight line through the middle of it
  • Diameter - Geometry - AllMath
    The diameter and circumference of a circle are inseparably related The circumference of a circle is the measurement of its outside edge, whereas the diameter is the length of the chord that passes through its center
  • Diameter - Math. net
    Three diameters are drawn for circle O below As long as the line segment passes through the center and has its endpoints on the circle, it is a diameter The diameter of a circle is twice the length of the circle's radius The two radii of length r, shown above for the circle, form diameter d





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