The amount contained in a cloud.

Abounding with clouds, clouded, cloudy. / (by extension) Dark, dimmed; troubled, turbid.

A surname.

(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 rain cloud, with potential to bring a storm.

(informal, computing) Computing services provided over the Internet (or "cloud"), whereby shared resources, software, and information are provided to computers and other devices on demand.

A form of atmospheric pollution, a mixture of aerosols that absorb and scatter light, resulting from the burning of biomass and fossil fuel.

Alternative form of cloudburst

(chemistry) The temperature at which one component of a mixture of liquids begins to solidify (or a mixture of liquids starts to become immiscible) on cooling, resulting in visible cloudiness; as for example in diesel fuel in freezing temperatures; the consolute point

(meteorology) A high-altitude cloud that is shaped like a lens.