per S3 W1 /pə; strong pɜː $ pər strong pɜːr/ BrE AmE preposition
[ Date: 1300-1400 ; Language: Latin ; Origin: 'through, by' ]
1 . per hour/day/week etc during each hour etc:
The park attracts four million visitors per year.
miles/kilometres per hour (=used for measuring speed)
a speed limit of 40 miles per hour
2 . for each:
How much does it cost per kilo?
rooms costing £40 per night
Admission is £9.95 per adult.
My car does 12 miles per litre (=for each litre of petrol) .
The meal cost $25 per head (=for or by each person) .
3 . as per something formal according to something:
The work was carried out as per your instructions.
4 . as per usual/normal spoken used when something annoying happens which has often happened before:
Jenny was late, as per usual.
⇨ ↑ per annum , ↑ per capita