| 单词 |
stratus |
| 释义 |
stratus Meteorol.|ˈstrɑːtəs, ˈstreɪtəs|
[a. L. strātus (u stem), f. strā-, sternĕre to spread, lay down. (See quot. 1803, and cf. stratum.)]
One of the simple forms of cloud, having the appearance of a broad sheet of nearly uniform thickness, usually existing at low elevations.
1803L. Howard Modif. Clouds (1865) 4 Stratus, a widely extended, continuous, horizontal sheet, increasing from below upward. footn. This application of the Latin word stratus is a little forced. But the substantive stratum, did not agree in its termination with the other two [cirrus, cumulus], and is besides already used in a different sense even on this subject, e.g. a stratum of clouds; yet it was desirable to keep the derivation from the verb sterno, as its significations agree so well with the circumstances of this Cloud. 1831Brewster Nat. Magic vi. (1833) 141 A thin stratus or ‘fog bank’ appeared in the same quarter. 1858Jenyns Observ. Meteorol. 199 Hence a mist will often appear in damp places, while in others, where dews are of constant occurrence, a mist, i.e. stratus, may be a rare thing. 1882Pidgeon Engineer's Holiday II. 216 Extending..a considerable distance towards the zenith, lay a thick horizontal layer of stratus, above which was blue.
attrib.1860Tyndall Glac. i. xviii. 122 A gray stratus cloud had drawn itself across the neck of the Matterhorn. 1883Harper's Mag. May 888/2 In that low mass of stratus clouds which overhung the sunset there was now a wild convulsion. |
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