qui·es·cent /-sṇt/
  (a.)靜止的,不活動的,寂靜的
  qui·es·cent /-ṇt/ 形容詞
  靜止的,休眠的
  quiescent
  靜( 止 )的; 不動的
  quiescent
  靜止 靜態
  Qui·es·cent a.
  1. Being in a state of repose; at rest; still; not moving; as, a quiescent body or fluid.
  2. Not ruffed with passion; unagitated; not in action; not excited; quiet; dormant; resting.
     In times of national security, the feeling of patriotism . . . is so quiescent that it seems hardly to exist.   --Prof. Wilson.
  3. Gram. Not sounded; silent; as, y is quiescent in “day” and “say.”
  Qui·es·cent, n. Gram. A silent letter.
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  quiescent
       adj 1: not active or activated; "the quiescent level of centimeter
              wave-length solar radiation"
       2: marked by a state of tranquil repose; "the quiescent
          melancholy of the town"
       3: being quiet or still or inactive
       4: causing no symptoms; "a quiescent tumor"