Final answer:
The combining form 'phac/o' in phacoemulsification means lens of the eye, which is relevant to the process of cataract removal.
Step-by-step explanation:
In the term phacoemulsification, the combining form phac/o means lens of the eye. The combining form phac/o is derived from the Greek word for lens, which is relevant to the process of phacoemulsification. Phacoemulsification is a surgical procedure that involves breaking up and removing a cloudy lens (cataract) from the eye.