The Collaborative International Dictionary
Quiescing
Quiesce \Qui*esce"\, v. i. [imp. & p. p. Quiesced; p. pr. & vb. n. Quiescing.] [L. quiescere, akin to quies rest, quiet. See Quiet,
& n.] To be silent, as a letter; to have no sound.
--M. Stuart.
Wiktionary
quiescing
vb. (present participle of quiesce English)