- for each; for every: Membership costs ten dollars per year. This cloth is two dollars per yard.
- by means of; by; through: I am sending the recipe per messenger.
- according to; in accordance with: I delivered the box per your instructions.He managed to monopolize the meeting, per usual.
- each; for each one: The charge for window-washing was five dollars per.
- a prefix meaning “through,” “thoroughly,” “utterly,” “very”: pervert; pervade; perfect.
- a prefix used in the names of inorganic acids and their salts that possess the maximum amount of the element specified in the base word: percarbonic (H2C2O5), permanganic (HMnO4), persulfuric (H2S2O8), acids; potassium permanganate (KMnO4); potassium persulfate (K2S2O8).
- percentile.
- period.
- person.
- Persia.
- Persian.
- for every
- (esp in some Latin phrases) by; through
- according to
- as usual
- Professional Employment Register
- through
- throughout
- away, beyond
- completely, throughly
- (intensifier)
- indicating that a chemical compound contains a high proportion of a specified element
- indicating that a chemical element is in a higher than usual state of oxidation
- (not in technical usage) a variant of peroxy- persulphuric acid