IPA: /ɪkˈskrɛsənsi/
KK: /ɛkˈsɹɛsənsi/
A growth or outgrowth that is abnormal or not normal, often on a living organism.
The doctor examined the excrescency on the patient's skin to determine if it was harmful.
Excrescency → It is formed from "ex-" (meaning out of or away from) and "crescere" (meaning to grow). The word describes something that grows out or away from a surface, often referring to an abnormal growth or protrusion.
Think of something that is 'growing out' ('ex-') from a surface — that's what excrescency means.