Definitions

1. adjective

growing or developing in an unusual or abnormal manner, especially in a way that is uncontrolled or excessive

“The excrescent branches of the tree were causing problems for the nearby power lines.”

2. noun

an abnormal or excessive growth or development

“The doctor examined the excrescent tumor and recommended a course of treatment.”

3. noun

a growth or projection that is considered unsightly or unattractive

“The architect designed the building to hide the excrescent chimney from view.”