<p><strong>Noun</strong></p><ul><li>A straight line passing through the center of a circle or sphere and meeting the circumference or surface at each end.</li><li>A straight line passing from side to side of any figure or body, through its center.</li><li>The length of such a line.</li><li>The width of a circular or cylindrical object.</li></ul><p><strong>End of Response</strong></p>