plural of cloud of title

plural of wall cloud

plural of Wilson cloud

plural of mammatus cloud

plural of polar stratospheric cloud

plural of inner Oort Cloud

A cloud that is associated with wind, or is believed to presage windy weather.

(meteorology) A tapering cloud descending from a larger storm cloud, indicating the presence of an intense vortex. A tornado is a funnel cloud which reaches the ground.

(astronomy) The Solar System's Oort cloud, extending from 50,000 to 100,000 astronomical units (approximately 1 light year) from the sun; supposedly the source of most comets around the Solar System.

(idiomatic) Often in the phrase on cloud nine: a state of bliss, elation or happiness. / (idiomatic, possibly nonstandard) A state of fantastic or impractical dreaming or thinking.