stratus
演变路径（由近及远）
- 英语
- 书面借自 ←拉丁语 stratus
- 继承自 ←原始意大利语族语 *strātos
- 继承自 ←原始印欧语 *str̥h₃tós
原始词根
原始印欧语 *sterh₃-
词源说明
Learned borrowing from Latin strātus (“spread or stretched out”). Coined by the British chemist and amateur meteorologist Luke Howard (1772–1864): see the 1803 quotation. Doublet of strath.
释义（英文）
名词 Noun
- (meteorology) A principal, low-level cloud type in the form of a gray layer with a rather uniform base, usually not associated with precipitation, and capable of producing corona phenomena and a weak, uniform