preoccupancy
/prɪˈɒkjʊp(ə)nsi/ /priːˈɒkjʊp(ə)nsi/noun
1The action or fact of occupying previously; previous or earlier occupation.
2The state or condition of being preoccupied or mentally absorbed.
Origin
Mid 18th century; earliest use found in Samuel Johnson. From pre- + occupancy, after preoccupy.