diameter

Definitions

General Science

• noun the distance across the widest part of a circle or a tube

Astronomy

• The full width of a celestial object, measured either in units of distance or of angular measure as seen from the Earth or some other point

Aviation

• noun the distance from one side of a circle to the other, passing through the centre

Cars & Driving

• noun the length of a straight line through the centre of a circular object connecting two directly opposite points on its circumference

Construction

• The line in a circle passing through its center. Also refers to the nominal diameter designated by an approved material standard.

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Contexts for “diameter”

5 definitions in context
• General Science
• Astronomy
• Aviation
• Cars & Driving
• Construction