"foreknowledge" means to "know beforehand".“Foreknown” means to have a relationship before, as in God loved you before you existed (thus the reason for the Predestined, Called, Justified and Glorified). Glorified means to be made perfect and sinless, a promise that is to be fulfilled for the Saints when we leave this mortal body behind. Do you really believe that you were made perfect before God even knew you, let alone before you were Justified in Christ?
I believe it a nonsensical position to take on the passage in Romans and contrary to the plain reading of the so called “golden chain”.
Traditional Calvinism views this as prescience based on God's decree (see Calvin's Institutions). Traditional Arminianism views this as prescience which forms the basis of predestination.
The idea of redefining foreknowledge to be relational (as in "know" being an euphemism for sexual acts) is relatively new. It is just Calvinists trying to "prove" their theories via redefining words.