| 单词 | precipitate |
| 释义 | precipitate v., adj., & n. --vtr. 1. hasten the occurrence of; cause to occur prematurely. 2. (foll. by into) send rapidly into a certain state or condition (were precipitated into war). 3. throw down headlong. 4. Chem. cause (a substance) to be deposited in solid form from a solution. 5. Physics a cause (dust etc.) to be deposited from the air on a surface. b condense (vapour) into drops and so deposit it. --adj 1. headlong; violently hurried (precipitate departure). 2. (of a person or act) hasty, rash, inconsiderate. --n 1. Chem. a substance precipitated from a solution. 2. Physics moisture condensed from vapour by cooling and depositing, e.g. rain or dew. Derivatives precipitable adj. precipitability n. precipitately adv. precipitateness n. precipitator n. Etymology: L praecipitare praecipitat- f. praeceps praecipitis headlong (as PRAE-, caput head) |
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