EFFLORES'CENCE, n. In botany,the time of flowering; the season when a plant shows its first blossoms. 1. Among physicians, a redness of the skin; eruptions; as in rash, measles, small pox, scarlatina, &c.2. In chimistry, the formation of small white threads, resembling the sublimated matter called flower, on the surface of certain bodies, as salts. This is properly a shooting out of minute spicular crystals, called sometimes a saline vegetation, as that of the sulphate of magnesia on the deserts of Siberia, and of natron in Egypt. In butter much salted, the salt shoots in spiculae, and an efflorescence is often seen on walls formed with plaster. In some species of salts, as in sulphate and carbonate of soda, the efflorescence consists of a fine white dust. This kind of efflorescence is the contrary of deliquescence. In the latter, the saline crystals decompose the air, or rather abstract moisture from it; in the former, the atmosphere decomposes the saline crystals, and the water of crystallization is abstracted from the salts. |
Why Donate?
Here are a number of reasons:
To indicate your approval.
To express your appreciation.
To help pay for website expenses and keep this website online.
Donate Using PayPal
If you have a major credit card (Visa, MasterCard, American Express) or a PayPal account, donating is easy. Just click the dollar amount below to donate:
Donations from Outside of the United States
We welcome donations from anywhere in the world and in any currency. PayPal accepts a number of international currencies.
Donations by Other Methods
If you wish to donate via direct bank deposit or mail a cheque or money order, please
email me
.
|
| Firefox Plugin |
| I | S |
 |
1828 Webster's |
Add Search To Your Site |
[ + ] |
|
|
|