From Latin per (“through, during”), from Proto-Indo-European *per. Doublet of par. PER definition: 1. used when expressing rates, prices, or measurements to mean for each : 2. used when expressing…. Learn more. Per meaning a or an or for each occurs chiefly in technical or statistical contexts: miles per gallon; work-hours per week; feet per second; gallons of beer per person per year. It is also common in sports commentary: He averaged 16 points per quarter. Upcoming PER continuing education events — in-person conferences, hybrid meetings, and virtual programs for physicians, nurses, pharmacists, and optometrists, listed by date. per (pɜr; unstressed pər) prep. 1. for or in each or every; a or an: Membership costs $10 per year. 2. according to; in accordance with: I delivered the box per your instructions. 3. by means of; by; through: Send it per messenger. PER meaning: 1. used when expressing rates, prices, or measurements to mean for each : 2. used when expressing…. Learn more. This disambiguation page lists articles associated with the title Per. If an internal link incorrectly led you here, you may wish to change the link to point directly to the intended article. The meaning of PER is by the means or agency of : through. How to use per in a sentence. Using Per as a Preposition: Usage Guide. “As per” is a good choice when you want to show that you are following certain rules or requests. It means “in accordance with,” which works when someone has asked us to do something, and we are choosing to act on it. Ready to Advance Your Clinical Knowledge? Join over 200,000 healthcare professionals who trust PER® for evidence-based continuing education. Create your free account today.