Any serious student of Halacha knows that this is certainly not the way the term is used in Poskim.
You used the term in response to MeemaYehudis, who asked the shaila.
He clearly is saying that were it a Tzorech Gadol the Rema l’Shittaso would permit it.
He is saying no such thing. See M”B in 325:60 who equates “d’var mitzvah gemurah” (including hot food) with tzorech gadol.