Stellar wind is outward-moving gas from a stellar atmosphere,
presumed steadier than distinct bursts. It is the analog
of solar wind for other stars, but for other
types of stars, the makeup and other characteristics
of the wind can vary. For example, massive stars tend to have
much stronger stellar wind, to the point of emitting
much more of their mass over a much shorter lifetime.
The term superwind refers to an
extreme wind in a very late phase of an asymptotic giant branch (AGB) star.
A bubble within the interstellar medium (ISM) formed from the outgoing stellar-wind
is termed an asterosphere (the Sun's is called the heliosphere),
and for very strong stellar winds, a stellar-wind bubble.