EFFLORESCENCE

efflorescence. Efflorescence, n. the white matter like powder on salts, &c. the red spots in fever, the flowering of plants

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Ef′flo‐res″cence (?), n. [[F. efflorescence.]] 1. 1. (Bot.) Flowering, or state of flowering; the blooming of flowers; blowth.
2. 2. (Med.) A redness of the skin; eruption, as in rash, measles, smallpox, scarlatina, etc.
3. 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.