infall

plural infalls

1. countableuncountableThe act or process of falling in.
2. countableuncountableAn incursion; an inroad.

   1650, Oliver Cromwell, a letter we learn that Ker , with his Western Army , was lying at a place called Carmunnock , when he made this infall upon Lambert

3. countableThe area where water, storm runoff, etc., enters a storm drain.
4. uncountableastronomyMovement towards a massive astronomical body under the influence of gravity; especially the process whereby gas falls towards a neutron star or black hole at high speed, forming a plasma

present singular third person infalls · participle present infalling · past infell · participle past infallen

1. intransitiveTo fall in.
2. intransitiveastronomyTo undergo infall.

   After this time the beam mass loss rate decreases since once the expansion wave radius is larger than the beam, material initially outside the beam starts to infall and compensate for material which is collapsing at centre of the core [...]

   1997, Bo Reipurth, Claude Bertout, Herbig-Haro flows and the birth of low mass stars