Lewis Short
praeoccŭpātĭo (noun F) : praeoccupo.
* A seizing beforehand, preoccupation: locorum praeoccupatio,Nep. Eum. 3, 6.
* Rhet. fig., an anticipation of what properly comes afterwards, prolepsis, Beda, Schem. et Tropis init.
* A disease that violently distends the abdomen: quae passio Graece emphragma, Latine praeoccupatio dicitur,Veg. Vet. 1, 40.
Charlton T. Lewis, Charles Short, A Latin Dictionary