Webster’s Revised Unabridged Dictionary · 1913
Cryohydrate
Cry′o·hy′drate (kr?′?-h?′dr?t), n. [Gr. κρύος cold + E. hydrate.] (Chem.) A substance, as salt, ammonium chloride, etc., which crystallizes with water of crystallization only at low temperatures, or below the freezing point of water. F. Guthrie.