Online Google Dictionary

diameter 中文解釋 wordnet sense Collocation Usage
Noun
/dīˈamitər/,
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diameters, plural;
  1. A straight line passing from side to side through the center of a body or figure, esp. a circle or sphere

  2. The length of this line

  3. A transverse measurement of something; width or thickness

  4. A unit of linear measurement of magnifying power


  1. the length of a straight line passing through the center of a circle and connecting two points on the circumference
  2. In the mathematical field of graph theory, the distance between two vertices in a graph is the number of edges in a shortest path connecting them. This is also known as the geodesic distance
  3. Diameter is a AAA protocol, a type of computer networking protocol for authentication, authorization and accounting, and is a successor to RADIUS.
  4. (Diameters) In microscopy, an indication of the amount of magnification. 1000 diameters=1000 times original size.
  5. (n.) The distance across a graph, measured by the number of links traversed. Diameter is usually taken to mean maximum diameter (ie the greatest internode distance in the graph, but it can also mean the average of all internode distances. ...
  6. Body Jewelry is measured by the inner diameter. Size Chart for more info.
  7. For liquid motors, the maximum envelope diameter of the motor. This is usually the same as the diameter of the nozzle exit, but in some cases may be more than that due to pumps, pipes, or structural attach points. For solid motors, the diameter of the main motor body.
  8. Diameter is the distance from the center of the hub to the tip of the blade x 2. It can also be looked at as the distance across the circle that the propeller would make when rotating. It is the first number listed when describing a propeller.
  9. The actual height of the tire measured through the center, in inches. Not always marked on the tire.
  10. If (M, d) is a metric space and S is a subset of M, the diameter of S is the supremum of the distances d(x, y), where x and y range over S.
  11. The length of a straight line that extends from one edge of a tumor or other object, through its center and to the opposite edge. It is usually used to measure the size of round or spherical shapes.
  12. The width of the diamond, measured around the girdle.
  13. A successor AAA protocol to RADIUS that supports enhanced security and communication methods. [800-127] (see also security)
  14. is an apt name for the measure across a circle. The word comes from the union of the Greek roots dia (across) and metros (to measure). Euclid used diameter in relation to the bisecting chord of a circle and also as the diagonal of a square.
  15. Signaling protocol for AAA functions in IMS networks
  16. The distance between one edge of a circular object to the other edge and passing through the center. ...
  17. Maximum dimension of the observation on the imaging sequence or contrast phase where the margins are best defined. Do not include perilesional enhancement (perfusional abnormality)
  18. the maximum number of steps between any two states in a search space.
  19. the width of a circular or cylindrical object
  20. unless otherwise indicated, means the nominal diameter by which a pipe, fitting, trap or other item is commercially designated.
  21. The measurement of the circumference of a tube of cane.  The smaller the diameter, the more open the reed tip.
  22. The distance straight through the middle of the temari.
  23. The way Large Scalers refer to curves in their track, a practice inherited from most of the Large Scale manufacturers. When a Large Scaler tells you he is using mostly five-foot curves, he may well mean 30"-radius curves. Don't blame him for confusing you; it's not his fault. See "Radius."
  24. The diameter of a set of points is the greatest Euclidean distance between any two points in the set.
  25. The greatest distance across a flat canopy, from skirt to skirt, measured when the canopy is lying flat. This measurement designates the size of the parachute in feet.