term:

In Limine

in limine adv

[Latin, on the threshold]
: at the beginning
: as a preliminary matter
;specif
: before a particular procedure or proceeding takes place
adj : of, relating to, or being a motion, petition, or order regarding the admissibility of evidence whose exclusion is sought esp. on the ground that it is prejudicial

Source: Merriam-Webster's Dictionary of Law ©1996. Merriam-Webster, Incorporated. Published under license with Merriam-Webster, Incorporated.