The story
From phaco- + emulsification.
Etymology from Wiktionary, CC BY-SA 4.0.
Today it means: A form of cataract surgery in which the eye's internal lens is emulsified with an ultrasonic handpiece and aspirated from the eye. Aspirated fluids are replaced with irrigation of balanced salt solution, thus maintaining the anterior chamber, as well as cooling the handpiece. Full definition →
From phaco- + emulsification.
Etymology from Wiktionary, CC BY-SA 4.0.