Wordnet 3.0
VERB (2)
1.
engage or engross the interest or attention of beforehand or occupy urgently or obsessively;
- Example: "His work preoccupies him"- Example: "The matter preoccupies her completely--she cannot think of anything else"2.
occupy or take possession of beforehand or before another or appropriate for use in advance;
- Example: "the army preoccupied the hills"
The Collaborative International Dictionary of English v.0.48:
Preoccupy \Pre*oc"cu*py\, v. t. [imp. & p. p. Preoccupied
(-p[imac]d); p. pr. & vb. n. Preoccupying.] [Cf. F.
pr['e]occuper. See Preoccupate, Occupy.]
1. To take possession of before another; as, to preoccupy a
country not before held.
[1913 Webster]
2. To prepossess; to engage, occupy, or engross the attention
of, beforehand; hence, to prejudice.
[1913 Webster]
I Think it more respectful to the reader to leave
something to reflections than to preoccupy his
judgment. --Arbuthnot.
[1913 Webster]
WordNet (r) 3.0 (2006):
preoccupy
v 1: engage or engross the interest or attention of beforehand
or occupy urgently or obsessively; "His work preoccupies
him"; "The matter preoccupies her completely--she cannot
think of anything else"
2: occupy or take possession of beforehand or before another or
appropriate for use in advance; "the army preoccupied the
hills"