The diameter of a cylinder or gear measured at the pitch circle, which is the imaginary circle that defines the point where the teeth of the gear engage.

In a more general context, it can refer to the distance from the axis of a cylindrical object to the pitch circle.

एक बेलनाकार वस्तु के अक्ष से पिच सर्कल की दूरी।

English Usage: The engineer calculated the pitch diameter to ensure the bearing would fit properly.

Hindi Usage: इंजीनियर ने यह सुनिश्चित करने के लिए पिच डायमीटर की गणना की कि बेयरिंग सही ढंग से फिट होगा।