1. present participle of focus; concentrating attention or effort on something
Usage: British spelling variant; American English typically uses 'focusing'
2. adjusting a lens or optical instrument to produce a clear image
Usage: technical/optical context

1. the act or process of concentrating attention or adjusting optical clarity
Usage: gerund form; less common than verb usage

Examples

• She is focussing on her studies this semester.
• The photographer is focussing the camera on the distant mountains.
• Focussing your energy on one goal at a time is more effective.
• He struggled with focussing during the long meeting.
• The telescope requires careful focussing to see the stars clearly.
• They are focussing their efforts on reducing costs.