first cosmic velocity

Etymology
, from being the first velocity greater than that able to be held upon the Earth, thus entering the realm of the Cosmos.

Proper noun

 * 1) The velocity in a circular orbit about the Earth.

Noun

 * 1) The velocity in a circular orbit.

Synonyms

 * first cosmic speed

Coordinate terms

 * second cosmic velocity / second cosmic speed
 * third cosmic velocity / third cosmic speed