diameterdaɪˈæm ɪ tər
diameter (n)
- plural
- diameters
English Definitions:
diameter, diam (noun)
the length of a straight line passing through the center of a circle and connecting two points on the circumference
diameter (noun)
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 (Noun)
Any straight line between two points on the circumference of a circle that passes through the centre/center of the circle.
diameter (Noun)
The length of such a line.
diameter (Noun)
The maximum distance between any two points in a metric space
diameter (Noun)
The maximum eccentricity over all vertices in a graph.
Diameter
In geometry, the diameter of a circle is any straight line segment that passes through the center of the circle and whose endpoints lie on the circle. It can be also defined as the longest chord of the circle. Both definitions are also valid for the diameter of a sphere. The word "diameter" is derived from Greek διάμετρος, "diameter of a circle", from δια-, "across, through" + μέτρον, "measure". In more modern usage, the length of a diameter is also called the diameter. In this sense one speaks of the diameter rather than a diameter, because all diameters of a circle or sphere have the same length, this being twice the radius. For a convex shape in the plane, the diameter is defined to be the largest distance that can be formed between two opposite parallel lines tangent to its boundary, and the width is defined to be the smallest such distance. Both quantities can be calculated efficiently using rotating calipers. For a curve of constant width such as the Reuleaux triangle, the width and diameter are the same because all such pairs of parallel tangent lines have the same distance. See also Tangent lines to circles.
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"diameter." Kamus.net. STANDS4 LLC, 2024. Web. 23 Apr. 2024. <https://www.kamus.net/english/diameter>.
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