present participle of cloud

A cloudy appearance. / A mottled appearance given to ribbons and silks in the process of dyeing. / A diversity of colours in yarn, recurring at regular intervals.

plural of clouding

(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.

A large cloud of smoke, flame and debris that rises into the sky as a result of a large explosion, especially after a nuclear explosion, characterized by a long shaft rising from the ground into a much-larger or more-spread-out top, reminiscent of a mushroom in shape.

(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.

(property law) An encumbrance or claim on a title (ownership) to real property sufficient to interfere with title transfer until the problem has been resolved.

Alternative spelling of thundercloud

A series of points in three-dimensional space that collectively describe the geometry of a physical object.