User: Many animals have body symmetry with distinct front and back ends. This type of symmetry is A. unilateral symmetry.
Cumulonimbus, from the Latin cumulus (heap) and nimbus (rainstorm, storm cloud), is a dense towering vertical cloud associated with thunderstorms and atmospheric instability, forming from water vapor carried by powerful upward air currents.
The noun CUMULONIMBUS CLOUD has 1 sense: 1. a dark cloud of great vertical extent charged with electricity; associated with thunderstorms. Familiarity information: CUMULONIMBUS CLOUD used as a noun is very rare.