Dictionary
pes•ti•len•tial
Pronunciation: (pes"tl-en'shul), [key]—
adj.
1. producing or tending to produce pestilence.
2. pertaining to or of the nature of pestilence, esp. bubonic plague.
3. pernicious; harmful.
4. annoyingly troublesome.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.