Sonic Definition–adjective | 1. | of or pertaining to sound. | | 2. | noting or pertaining to a speed equal to that of sound in air at the same height above sea level. | |
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Foundry Definition–noun, plural -ries. | 1. | an establishment for producing castings in molten metal. | | 2. | the act or process of founding or casting metal. | | 3. | the category of metal objects made by founding; castings. | |
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Acid Definition–noun | 1. | Chemistry. a compound usually having a sour taste and capable of neutralizing alkalis and reddening blue litmus paper, containing hydrogen that can be replaced by a metal or an electropositive group to form a salt, or containing an atom that can accept a pair of electrons from a base. Acids are proton donors that yield hydronium ions in water solution, or electron-pair acceptors that combine with electron-pair donors or bases. | | 2. | a substance with a sour taste. | | 3. | something, as a remark or piece of writing, that is sharp, sour, or ill-natured: His criticism was pure acid. | –adjective | 5. | Chemistry. | a. | belonging or pertaining to acids or the anhydrides of acids. | | b. | having only a part of the hydrogen of an acid replaced by a metal or its equivalent: an acid phosphate. | | c. | having a pH value of less than 7. Compare alkaline (def. 4). | | | 6. | sharp or biting to the taste; tasting like vinegar; sour: acid fruits. | | 7. | sharp, biting, or ill-natured in mood, manner, etc.: an acid remark; an acid wit. | | 8. | Geology. containing much silica. | | 9. | Metallurgy. noting, pertaining to, or made by a process in which the lining of the furnace, or the slag that is present, functions as an acid in high-temperature reactions in taking electrons from oxide ions: usually a siliceous material, as sand or ganister. Compare basic (def. 3). | —Idiom | 10. | put on the acid, Australian Slang. to importune someone, as for money, sexual favors, or confidential information. | |
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