outflow
n. C / Un. the movement of something, like money or liquid, out of a place. In science, it often describes gas or material being pushed away from a star or galaxy.
n. the process of material, such as gas, plasma, or liquid, moving steadily out of a specific system or location. In an astronomical context, it refers to the large-scale ejection of matter from stars or galactic nuclei.
The star's powerful outflow pushes gas into deep space.
Astronomers observed a massive outflow of ionized gas from the center of the galaxy, likely caused by a supermassive black hole.
The study suggests that the bipolar outflow from the young stellar object is responsible for clearing the surrounding molecular cloud, eventually halting the star's further growth.
From Middle English outflowen, from late Old English ūtflōwan (attested in the past tense as ūt flēow), equivalent to out- + flow. The noun is derived from the verb.
Often used with 'of' to specify the material being moved ('outflow of gas').