Efflorescence
Pronunciation : Ef`flo*res"cence
Part of Speech : n.
Etymology : [F. efflorescence.]
Definition : 1. (Bot.)
Defn: Flowering, or state of flowering; the blooming of flowers; blowth.
2. (Med.)
Defn: A redness of the skin; eruption, as in rash, measles, smallpox, scarlatina, etc.
3. (Chem.) (a) The formation of the whitish powder or crust on the surface of efflorescing bodies, as salts, etc. (b) The powder or crust thus formed.
Source : Webster's Unabridged Dictionary, 1913