pre·oc·cu·pan·cy 
(prē-ŏkyə-pən-sē)
(prē-ŏkyə-pən-sē)n.
1. The act or right of occupying a place beforehand or in advance.
2. The state of being preoccupied or engrossed; preoccupation.
- probability cloud
- probability density
- probability distribution
- probability theory
- probability wave
- probable
- probable cause
- probable error
- probably
- proband
- probang
- probate
- probate court
- probation
- probational
- probationally
- probationary
- probationer
- probation officer
- probative
- probatory
- probe
- probenecid
- prober
- probingly