focus on to pay special attention to a particular person or thing instead of others Today we are going to focus on the question of homeless people in the city. All eyes were focused on the speaker. to change the position of the lens on a camera,etc.so you can see sth.clearly The scientists focused the telescope on the moon. The beams of light moved across the sky and focused on the aircraft. focus on • to pay special attention to a particular person or thing instead of others Today we are going to focus on the question of homeless people in the city. All eyes were focused on the speaker. • to change the position of the lens on a camera, etc. so you can see sth. clearly The scientists focused the telescope on the moon. The beams of light moved across the sky and focused on the aircraft