1. Abnormal or unwanted growths or outgrowths on the body or a surface; tumors or lumps.
Usage: Medical or biological context
2. Unnecessary or superfluous additions or features; things that are considered ugly or undesirable.
Usage: Figurative use

Examples

• The dermatologist removed the skin excrescencies from the patient's arm.
• The old building was covered with architectural excrescencies that detracted from its original design.
• Warts and other excrescencies can be treated with modern medical procedures.
• The author removed the excrescencies from the manuscript to improve its clarity.
• Bone excrescencies sometimes develop in response to repeated stress or injury.
• The designer eliminated the visual excrescencies to create a cleaner, more elegant product.