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A powdery deposit on a surface
Answer for the clue "A powdery deposit on a surface ", 13 letters:
efflorescence
Alternative clues for the word efflorescence
Word definitions for efflorescence in dictionaries
Douglas Harper's Etymology Dictionary
Word definitions in Douglas Harper's Etymology Dictionary
1620s, "a bursting into flower, act of blossoming out," from French efflorescence , from Latin efflorescentem (nominative efflorescens ), present participle of efflorescere "to bloom, flourish, blossom" (see effloresce ). Sense in chemistry is from 1660s. ...
Wiktionary
Word definitions in Wiktionary
n. 1 (context chemistry English) The formation of a powdery surface on crystals, as a hydrate is converted to anhydrous form by losing loosely bound water of crystallization to the atmosphere. 2 (context botany English) The production of flowers. 3 (construction) ...
WordNet
Word definitions in WordNet
n. the period of greatest prosperity or productivity [syn: flower , prime , peak , heyday , bloom , blossom , flush ] any red eruption of the skin [syn: rash , roseola , skin rash ] the time and process of budding and unfolding of blossoms [syn: blossoming ...
The Collaborative International Dictionary
Word definitions in The Collaborative International Dictionary
Efflorescence \Ef`flo*res"cence\, n. [F. efflorescence.] (Bot.) Flowering, or state of flowering; the blooming of flowers; blowth. (Med.) A redness of the skin; eruption, as in rash, measles, smallpox, scarlatina, etc. (Chem.) The formation of the whitish ...
Wikipedia
Word definitions in Wikipedia
In chemistry , efflorescence (which means "to flower out" in French) is the migration of a salt to the surface of a porous material, where it forms a coating. The essential process comprises the dissolving of an internally held salt in water, or occasionally ...
Longman Dictionary of Contemporary English
Word definitions in Longman Dictionary of Contemporary English
noun EXAMPLES FROM CORPUS ▪ This efflorescence was undoubtedly linked to general progress throughout the Far East.
Usage examples of efflorescence.
The presence of magnesium salts is also very objectionable, as these generally remain in the burnt brick as magnesium sulphate, which gives rise to an efflorescence of fine white crystals after the bricks are built into position.
This absorption in material things and evanescent affairs engenders in the spirit an arid atmosphere of doubt and denial, in which no efflorescence of poetic and mystic faiths can flourish.
This sort of slang, therefore, technical in origin, the natural efflorescence of highly cultivated agilities of brain, and hand, and eye, is worthy of all commendation.
With awe in their faces they discerned slowly revolving dark plates of steel, effulgent gouts of water glistening with momentary rainbows, sloppy and distended clods of wet sand, powder storms of dry sand, and billowing efflorescences of black smoke and orange flame.
She lived in a phosphorescent palace of many terraces, with gardens of strange leprous corals and grotesque brachiate efflorescences, and welcomed me with a warmth that may have been sardonic.