lim·i·nal (ˈlimənl/) adj. 1. 
of or relating to a transitional or initial stage of a process. 2. 
occupying a position at, or on both sides of, a boundary or threshold. limen noun (plural limens or limina |ˈlimənə|) psychology a threshold below which a stimulus is not perceived or distinguished from another. ORIGIN -mid 17th century: […]