- An excrescent appendage, as, a wart or tumor; anything
growing out unnaturally from anything else; a preternatural or morbid
development; hence, a troublesome superfluity; an incumbrance; as, an
excrescence on the body, or on a plant.
Meaning of 'excrescence' (Princeton's WordNet)
1 . excrescence
[ n]
Meaning (1): - something that bulges out or is protuberant or projects from its surroundings