The story
From canaliculus + -o- + dacryocystorhinostomy.
Etymology from Wiktionary, CC BY-SA 4.0.
canaliculodacryocystorhinostomy
Today it means: A surgical procedure that treats severe tear drainage blockage by creating a new passage from the inner corner of the eye to the nose, usually using a small tube when the canaliculi are completely blocked. Full definition →