"Strong outflow" refers to a situation where a significant amount of something, such as water, air, or money, is flowing out or leaving a particular area swiftly and forcefully. Full definition
The intense radiation and strong outflows from these massive stars caused nearby gas to dissipate. (imagine.gsfc.nasa.gov)
This naturally explains why wind nebulae are not found among older pulsars, even those driving strong outflows. (sciencedaily.com)
Using the Subaru Telescope, researchers at the Special Astrophysical Observatory in Russia and Kyoto University in Japan have found evidence that enigmatic objects in nearby galaxies — called ultra-luminous X-ray sources (ULXs)-- exhibit strong outflows that are created as matter falls onto their black holes at unexpectedly high rates. (sciencedaily.com)