- Inactive, quiet, at rest.
- The bats were quiescent at that time of day, so we slowly entered the cave.
- 1840, John Wilson, “On the Genius and Character of Burns”, in John Wilson; Robert Chambers, The Land of Burns, a Series of Landscapes and Portraits, Illustrative of the Life and Writings of the Scottish Poet. The Landscapes from Paintings made Expressly for the Work, by D[avid] O[ctavius] Hill, Esq., R.S.A. The Literary Department, by Professor Wilson, of the University of Edinburgh; and Robert Chambers, Esq., Author of the “Scottish Biographical Dictionary,” “Picture of Scotland,” Etc. Etc., volume II, 2nd edition, Glasgow: Blackie & Son, Queen Street, Glasgow; South College Street, Edinburgh; and Warwick Square, London, OCLC 314762618, page ci:
- In times of national security, the feeling of Patriotism among the masses is so quiescent that it seems hardly to exist—in their case national glory or national danger awakens it, and it leaps up armed cap-a-pie.
- (grammar) Not sounded; silent.
- The k is quiescent in "knight" and "know".
- (cell biology) Non-proliferating.
Inactive, at rest, quiet