This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

n. The act or right of occupying a place beforehand or in advance.

n. The state of being preoccupied or engrossed; preoccupation.

n. The act or right of taking possession before another.

n. The act or right of taking possession before another.

n. The act of taking possession before another; preoccupation: as, the preoccupancy of unoccupied land.

n. The right of taking possession before others: as, to have the preoccupancy of land by right of discovery.

n. the act of taking occupancy before someone else does

n. the mental state of being preoccupied by something

"When I first wrote, thirty-five years ago, I attached great importance to preoccupancy, and fancied that a body of indigenous plants already fitted for every available station would prevent an invader, especially from, a quite foreign province, from having a chance of making good his settlement in a new country."

occupation    moving in    occupancy