Definition of "midstream"

But it was in the middle of this process that he had met Ms. Lukoji, and he opted not to change his application midstream to take his marriage into account.

2018 January 19, Matt Katz, “Leaving Africa, and Living in Limbo”, in The New York Times‎

Unlike film, theater and TV, the book world didn’t get interrupted midstream.

2020 November 19, Natasha Frost, “Covid-19, Boris Johnson, U.S. Troops: Your Thursday Briefing”, in The New York Times‎