vi ‧ cin ‧ i ‧ ty /vəˈsɪnəti, vɪˈsɪnəti/ BrE AmE noun formal
[ Date: 1500-1600 ; Language: Latin ; Origin: vicinitas , from vicinus 'near' , from vicus 'row of houses, village' ]
1 . in the vicinity (of something) in the area around a particular place:
The stolen car was found in the vicinity of the station.
There used to be a mill in the vicinity.
2 . in the vicinity of £3 million/$1,500/2 billion years etc close to a particular amount or measurement:
All meteorites are of the same age, somewhere in the vicinity of 4.5 billion years old.