A circle, or disk, or any indication of radiant light around the heads of divinities, saints, and sovereigns, upon medals, pictures, etc
\NIM-bus\, noun: 1 (Fine Arts) A circle, or disk, or any indication of radiant light around the heads of divinities, saints, and sovereigns, upon medals, pictures, etc ; a halo 2 A cloud or atmosphere (as of romance or glamour) that surrounds a person or thing 3 (Meteorology) A rain cloud
A nimbus is a large grey cloud that brings rain or snow. layers of cold nimbus clouds
The Nimbus satellite program, initiated by the National Aeronautics and Space Administration (NASA) and later operated by both NASA and the National and Oceanic Atmospheric Administration (NOAA), was developed in the early 1960s to meet research and development needs of the atmospheric and Earth scientists, providing global surveillance of the atmospheric structure at low Earth orbital altitudes for the world's weather services
adj describes clouds that are rain producers; always occur in conjunction with another type of cloud i e there are no "nimbus" clouds, but there are cumulonimbus clouds and nimbostratus clouds