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| pre·oc·cu·pied [ pree ókyə pd ] |
adjective |
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1. having attention taken up with something: completely absorbed in thinking about something or doing something, sometimes to the extent of neglecting other things
 She was too preoccupied to notice what was going on.
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2. occupied: already occupied by somebody or something else
a preoccupied airline seat
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3. biology already in use: describes a scientific name that has already been used to designate a species, genus, or other taxonomic group and therefore cannot be used again
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