The Collaborative International Dictionary of English v.0.48:

Freezing \Freez"ing\, a.
   Tending to freeze; for freezing; hence, cold or distant in
   manner. -- Frrez"ing*ly, adv.
   [1913 Webster]

   Freezing machine. See Ice machine, under Ice.

   Freezing mixture, a mixture (of salt and snow or of
      chemical salts) for producing intense cold.

   Freezing point, that degree of a thermometer at which a
      fluid begins to freeze; -- applied particularly to water,
      whose freezing point is at 32[deg] Fahr., and at 0[deg]
      Centigrade.
      [1913 Webster]

WordNet (r) 3.0 (2006):

freezing point
    n 1: the temperature below which a liquid turns into a solid
         [syn: freezing point, melting point]

Moby Thesaurus II by Grady Ward, 1.0:

38 Moby Thesaurus words for "freezing point":
   absolute zero, algidity, bitterness, bleakness, boiling point,
   briskness, chill, chilliness, cold, coldness, cool, coolness,
   coolth, crispness, cryogenics, cryology, decrease in temperature,
   dew point, freshness, frigidity, frostiness, gelidity, iciness,
   inclemency, intense cold, keenness, low temperature, melting point,
   nip, nippiness, rawness, recalescence point, rigor, severity,
   sharp air, sharpness, temperature, zero