a. [ L. excresens, -entis, p. pr. of excrescere to grow out ; ex out + crescere to grow. See Crescent. ] Growing out in an abnormal or morbid manner or as a superfluity. [ 1913 Webster ]
Expunge the whole, or lip the excrescent parts. Pope. [ 1913 Webster ]
Excrescent letter (Philol.),
pos>a. Pertaining to, or resembling, an excrescence. [ R. ] Hawthorne. [ 1913 Webster ]