PREOCCUPANCY
preoccupancy, preoccupation
(noun) the act of taking occupancy before someone else does
preoccupation, preoccupancy, absorption, engrossment
(noun) the mental state of being preoccupied by something
Source: WordNet® 3.1
Etymology
Noun
preoccupancy (usually uncountable, plural preoccupancies)
The act or right of taking possession before another.
Source: Wiktionary
Pre*oc"cu*pan*cy, n. Etym: [See Preoccupate.]
Definition: The act or right of taking possession before another; as, the
preoccupancy of wild land.
Source: Webster’s Unabridged Dictionary 1913 Edition