| 释义 |
WordReference Random House Learner's Dictionary of American English © 2024am•mo•nia /əˈmoʊnyə/USA pronunciation n. [uncountable]- Chemistrya colorless, strong-smelling gas or liquid, used chiefly for cleaning, refrigeration, and explosives.
WordReference Random House Unabridged Dictionary of American English © 2024am•mo•nia (ə mōn′yə, ə mō′nē ə),USA pronunciation n. [Chem.]- Chemistrya colorless, pungent, suffocating, highly water-soluble, gaseous compound, NH3, usually produced by the direct combination of nitrogen and hydrogen gases: used chiefly for refrigeration and in the manufacture of commercial chemicals and laboratory reagents.
- ChemistryAlso called ammonia solution, ammonia water, aqua ammoniae, aqua ammonia, aqueous ammonia. this gas dissolved in water;
ammonium hydroxide.
- Neo-Latin, so called as being obtained from sal ammoniac. See ammoniac
- 1790–1800
Collins Concise English Dictionary © HarperCollins Publishers:: ammonia /əˈməʊnɪə -njə/ n - a colourless pungent highly soluble gas mainly used in the manufacture of fertilizers, nitric acid, and other nitrogenous compounds, and as a refrigerant and solvent. Formula: NH3
- a solution of ammonia in water, containing the compound ammonium hydroxide
Etymology: 18th Century: from New Latin, from Latin (sal) ammōniacus (sal) ammoniac1 |