Contains

• cumulus

  A globular cloud.

• cirrus

  A wispy white cloud (usually of fine ice crystals) at a high altitude (4 to 8 miles).

• nimbus

  A dark grey cloud bearing rain.

• stratus

  A large dark low cloud.

• water vapor

  Water in a vaporous form diffused in the atmosphere but below boiling temperature.

• cirrocumulus

  A cloud at a high altitude consisting of a series of regularly arranged small clouds...

• cirrostratus

  A thin uniform layer of hazy cloud at high altitude.

• storm cloud

  A heavy dark cloud presaging rain or a storm.

• contrail

  An artificial cloud created by an aircraft; caused either by condensation due to the reduction...

• cloud bank

  A layer of clouds seen from a distance.

• cumulonimbus

  A dark cloud of great vertical extent charged with electricity; associated with th...

• nacreous cloud

  A luminous iridescent cloud at a high altitude that may be seen when the sun is a...

• nebule

  A small cloud.