Definition for PLAC'ID

PLAC'ID, a. [L. placidus, from placo, to appease.]

  1. Gentle; quiet; undisturbed; equable; as, a placid motion of the spirits. – Bacon.
  2. Serene; mild; unruffled; indicating peace of mind; as, a placid countenance or smile.
  3. Calm; tranquil; serene; not stormy; as, a placid sky.
  4. Calm; quiet; unruffled; as, a placid stream.

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