Ef`flo*res"cence (?), n. [F. efflorescence.]

1. Bot.

Flowering, or state of flowering; the blooming of flowers; blowth.

2. Med.

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.


The powder or crust thus formed.


© Webster 1913.