| 释义 |
WordReference Random House Learner's Dictionary of American English © 2024per /pɜr; unstressed pɚ/USA pronunciation prep. - Pronounsfor or in each or every;
a or an:Membership costs $100 per year. - according to;
in accordance with:I delivered the box per your instructions.
adv. - Informal Termseach;
for each one:The charge was five dollars per.
per-, prefix. - per- comes from Latin, is attached to roots and means "through, thoroughly, completely, very'':per- + -vert → pervert (= a person completely turned away from the normal);per- + -fect → perfect (= thoroughly or completely done).
WordReference Random House Unabridged Dictionary of American English © 2024per (pûr; unstressed pər),USA pronunciation prep. - Pronounsfor 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.
adv. - Informal Termseach;
for each one:The charge for window-washing was five dollars per.
- Latin: through, by, for, for each. See for
- 1580–90
Per for 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.Per is sometimes criticized in business writing in the sense "according to'' and is rare in literary writing. per-, - a prefix meaning "through,'' "thoroughly,'' "utterly,'' "very'':pervert;pervade;perfect.
- Chemistrya 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).
- Latin, combining form of per per, and used as an intensive
Per., - Place NamesPersia.
- Place NamesPersian.
per., - percentile.
- period.
- person.
Collins Concise English Dictionary © HarperCollins Publishers:: per /pɜː; (unstressed) pə/ determiner - for every: three pence per pound
prep - (esp in some Latin phrases) by; through
- as per ⇒ according to: as per specifications
- as per usual ⇒ informal as usual
Etymology: 15th Century: from Latin: by, for each Collins Concise English Dictionary © HarperCollins Publishers:: per- prefix - through: pervade
- throughout: perennial
- away, beyond: perfidy
- (intensifier): perfervid
- indicating that a chemical compound contains a high proportion of a specified element: peroxide, perchloride
- indicating that a chemical element is in a higher than usual state of oxidation: permanganate, perchlorate
Etymology: from Latin per through |