Learn how to say Excrescent correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word excrescent:
denoting, relating to, or resembling an abnormal outgrowth
uselessly added; not essential; superfluous
denoting or relating to a speech sound or letter inserted into a word without etymological justification, such as the b in nimble
C17: from Latin excrēscēns, from excrēscere, from crēscere to grow