Nominal governance by a dead person, through posthumous holding of an official position of authority, or by popular veneration and lasting influence of a personal ideology; necrocracy.

A male given name / Troilus, a character associated with the Trojan War

(surgery) The surgical removal of a lobe from an organ such as the lung or the brain

(mineralogy) A trigonal-hexagonal scalenohedral colorless mineral containing arsenic, calcium, hydrogen, oxygen, phosphorus, and sulfur.