| Acid (a.) Sour, sharp, or biting to the taste |
| Acid (a.) Of or pertaining to an acid |
| Acid (n.) A sour substance. |
| Acid (n.) One of a class of compounds, generally but not always distinguished by their sour taste, solubility in water, and reddening of vegetable blue or violet colors. They are also characterized by the power of destroying the distinctive properties of alkalies or bases, combining with them to form salts, at the same time losing their own peculiar properties. They all contain hydrogen, united with a more negative element or radical, either alone, or more generally with oxygen, and take their names from this negative element or radical. Those which contain no oxygen are sometimes called hydracids in distinction from the others which are called oxygen acids or oxacids. |
| Barbituric acid () A white, crystalline substance, CH2(CO.NH)2.CO, derived from alloxantin, also from malonic acid and urea, and regarded as a substituted urea. |
| Cyanuric acid () an organic acid, C3O3N3H3, first obtained by heating uric acid or urea, and called pyrouric acid |
| Monte-acid (n.) An acid elevator, as a tube through which acid is forced to some height in a sulphuric acid manufactory. |
| Salso-acid (a.) Having a taste compounded of saltness and acidity |
| c acid / back breaker / battery-acid / dose dot / Elvis / loony toons / Lucy in the sky with diamonds / pane superman / window pane / Zen street name for lysergic acid diethylamide |
| aspirin / acetylsalicylic acid / Bayer / Empirin / St. Joseph the acetylated derivative of salicylic acid, used as an analgesic anti-inflammatory drug (trade names Bayer, Empirin, and St. Joseph) usually taken in tablet form, used as an antipyretic, slows clotting of the blood by poisoning platelets |
| barbital / veronal / barbitone / diethylbarbituric acid / diethylmalonylurea a barbiturate used as a hypnotic |
| ethacrynic acid / Edecrin diuretic (trade name Edecrin) used to treat edema |
| ibuprofen / isobutylphenyl propionic acid / Advil / Motrin / Nuprin a nonsteroidal anti-inflammatory and analgesic medicine (trade names Advil and Motrin and Nuprin) used to relieve the pain of arthritis and as an antipyretic, "daily use of ibuprofen can irritate the stomach" |
| K / jet super acid / special K / honey oil / green / cat valium / super C street names for ketamine |
| lead-acid battery / lead-acid accumulator a battery with lead electrodes with dilute sulphuric acid as the electrolyte, each cell generates about volts |
| lysergic acid diethylamide / LSD a powerful hallucinogenic drug manufactured from lysergic acid |
| mefenamic acid / Ponstel a nonsteroidal anti-inflammatory and analgesic drug (trade name Ponstel) used to treat mild pain (especially menstrual cramps) |
| nalidixic acid / NegGram antibacterial agent used especially to treat genitourinary infections |