| 单词 | vapour |
| 释义 | vapour n. & v. (US vapor) --n 1. moisture or another substance diffused or suspended in air, e.g. mist or smoke. 2. Physics a gaseous form of a normally liquid or solid substance (cf. GAS). 3. a medicinal agent for inhaling. 4. (in pl.) archaic a state of depression or melancholy thought to be caused by exhalations of vapour from the stomach. --vintr. 1. rise as vapour. 2. make idle boasts or empty talk. Phrases and idioms vapour density the density of a gas or vapour relative to hydrogen etc. vapour pressure the pressure of a vapour in contact with its liquid or solid form. vapour trail a trail of condensed water from an aircraft or rocket at high altitude, seen as a white streak against the sky. Derivatives vaporous adj. vaporously adv. vaporousness n. vapourer n. vapouring n. vapourish adj. vapoury adj. Etymology: ME f. OF vapour or L vapor steam, heat |
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