excrescent

Adjective

ex=cres=cent

WORDNET DICTIONARY

excrescent(a = adj.pert) Array - forming an outgrowth (usually an excessive outgrowth); Array

noun

excrescent, 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." [1913 Webster]

Excrescent letter (Philol.), a letter which has been added to a root; as, the d in alder (AS. alr) is an excrescent letter.

For further exploring for "excrescent" in Webster Dictionary Online