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Meaning of biofog

bi•o•fog

Pronunciation: (bī'ō-fog", -fôg"), [key]
— n. Meteorol.
  1. a fog, resembling steam fog, produced by the contact of very cold air with the warmth and moisture issuing from animal or human bodies.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.