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"
occupy or take possession of beforehand or before another or appropriate for use in advance; "the army preoccupied the hills"
gain possession of by prior right or opportunity, especially so as to obtain the right to buy (land)
take the place of or have precedence over; "live broadcast of the presidential debate preempts the regular news hour"; "discussion of the emergency situation will preempt the lecture by the professor"
take into one's family; "They adopted two children from Nicaragua"
take up and practice as one's own
choose and follow; as of theories, ideas, policies, strategies or plans; "She followed the feminist movement"; "The candidate espouses Republican ideals"
(physics) the transfer of energy between elementary particles or between an elementary particle and a field or between fields; mediated by gauge bosons