Efflorescence /(?)/

Ef·flo·res·cence

Efflorescence

n.
  1. Flowering, or state of flowering; the blooming of flowers; blowth. (Bot.)
  2. A redness of the skin; eruption, as in rash, measles, smallpox, scarlatina, etc. (Med.)
  3. The formation of the whitish powder or crust on the surface of efflorescing bodies, as salts, etc. (Chem.)