Definition of "infall" in English

noun

1. The act or process of falling in.

2. An 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. (countable) The area where water, storm runoff, etc., enters a storm drain.

4. (astronomy, uncountable) Movement 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

verb

1. (intransitive) To fall in.

2. (intransitive, astronomy) To undergo infall.