prescientific

Of, relating to, or occurring at a time before the advent of modern science and the application of its methods.

Prior to testing or formulation in scientific terms; preliminary.

Existing before the scientific age; belonging or relating to times prior to the reduction of knowledge in general, or of some special branch of it, to the form of science.

relating to prescience (rare; compare prescient)

relating to a stage or time prior to the development of modern science