ACID

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Related to alpha-hydroxy acid: lactic acid

acid

1. any substance that dissociates in water to yield a sour corrosive solution containing hydrogen ions, having a pH of less than 7, and turning litmus red
2. a slang name for LSD
3. Chem
a. of, derived from, or containing acid
b. being or having the properties of an acid
4. (of rain, snow, etc.) containing pollutant acids in solution
5. (of igneous rocks) having a silica content of more than 60% of the total and containing at least one tenth quartz
6. Metallurgy of or made by a process in which the furnace or converter is lined with an acid material
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005

What does it mean when you dream about acid?

Can refer to something eating away at one’s insides. Alternatively, maybe an idea, a relationship, or a product is going through the “acid test.” Might also allude to an “acid tongue.”

The Dream Encyclopedia, Second Edition © 2009 Visible Ink Press®. All rights reserved.

acid

[′as·əd]
(chemistry)
Any of a class of chemical compounds whose aqueous solutions turn blue litmus paper red, react with and dissolve certain metals to form salts, and react with bases to form salts.
A compound capable of transferring a hydrogen ion in solution.
A substance that ionizes in solution to yield the positive ion of the solvent.
A molecule or ion that combines with another molecule or ion by forming a covalent bond with two electrons from the other species.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

ACID

(programming)
A mnemonic for the properties a transaction should have to satisfy the Object Management Group Transaction Service specifications. A transaction should be Atomic, its result should be Consistent, Isolated (independent of other transactions) and Durable (its effect should be permanent).

The Transaction Service specifications which part of the Object Services, an adjunct to the CORBA specifications.
This article is provided by FOLDOC - Free Online Dictionary of Computing (foldoc.org)

ACID

(Atomic, Consistent, Isolated, Durable) The properties of a transaction in a well-designed database management system (DBMS). The transaction must be ATOMIC (all updating tasks must be completed or nothing is done), CONSISTENT (it cannot leave the database in a state that violates any integrity rules), ISOLATED (remain invisible to other operations until completed) and DURABLE (will complete or be reversed if the system fails in the interim).
Copyright © 1981-2019 by The Computer Language Company Inc. All Rights reserved. THIS DEFINITION IS FOR PERSONAL USE ONLY. All other reproduction is strictly prohibited without permission from the publisher.
References in periodicals archive ?
NEW YORK -- Starting in the early 1990s, products formulated with alpha-hydroxy acids (AHAs) were pioneered by such suppliers as Neoteric Cosmetics Inc.
5 Cell-stimulating Alpha-hydroxy Acids (AHA's): Glycolic acid is the strongest of the AHA's and is very effective in exfoliating the skin.
"Few 100 per cent organic soaps exist on the market today and nothing can beat the unique properties of camel milk which is rich in anti-oxidants and alpha-hydroxy acids that offer unique anti-ageing properties reducing ageing spots and pigmentation while making the skin plump and smooth with less wrinkles," said Monal Zeidan, co-founder of camelmilksoap.com.
The "get gorgeous" Herb Tea for Clear Skin is rich in both antioxidants and natural alpha-hydroxy acids. It features skin soothing chamomile flowers with anti-inflammatory azulene, orange peel with bioflavonoids to strengthen veins and cell walls, hibiscus flowers for vitamin C, hormone-balancing chaste berry (so hormonal surges don't cause skin to break out) and cleansing burdock root.
For instance, he explains why alpha-hydroxy acids soften the appearance of wrinkles but don't eliminate the underlying problem.
ALPHA-HYDROXY ACIDS: These remove dead skin cells to reveal smoother, younger-looking skin.
A moisturiser's most basic job, therefore, is to supply the skin with moisture,although creams today contain additional extras such as alpha-hydroxy acids (AHAs,also known as fruit acids), vitamins, enzymes and liposomes.
Now, here's the good part: If you start smoothing on creams that contain alpha-hydroxy acids or vitamin C (acne and anti-aging lotions often have them) while the marks are still pink, they'll fade faster, says dermatologist Dr.
Alpha-hydroxy acids are organic acids derived from fruit acids (Taffe, 1997).
It's buffered to maintain a pH that provides a suitable environment for keratocytes, the predominant skin cell." While natural alpha-hydroxy acids such as those found in fruit are absorbed nicely in the acid-rich environment of the stomach, Howard points out that "we don't normally rub fruit on our skin." There are published data, he says, showing that individuals treated with chemoexfoliants are more susceptible to sunburns.
Skin creams without the alpha-hydroxy acids did not offer the same benefits.