prestack adjective 1noun 1forms 1 adjective1 •Before stacking, in the context of seismic migration. noun1 •The category c is called a prestack over a category C with a Grothendieck topology if it is fibered over C and for any object U of C and objects x, y of c with image U, the functor from objects over U to sets taking F:V→U to Hom(F*x,F*y) is a sheaf. formsprestacks
