Per



[pur; unstressed per] /pɜr; unstressed pər/

preposition
1.
for each; for every:
Membership costs ten dollars per year. This cloth is two dollars per yard.
2.
by means of; by; through:
I am sending the recipe per messenger.
3.
according to; in accordance with:
I delivered the box per your instructions.
adverb
4.
Informal. each; for each one:
The charge for window-washing was five dollars per.
1.
a prefix meaning “through,” “thoroughly,” “utterly,” “very”:
pervert; pervade; perfect.
2.
Chemistry. 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 (H 2 C 2 O 5), permanganic (HMnO 4), persulfuric (H 2 S 2 O 8), acids; potassium permanganate (KMnO 4); potassium persulfate (K 2 S 2 O 8).
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2.
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3.
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/pɜː; unstressed pə/
determiner
1.
for every: three pence per pound
preposition
2.
(esp in some Latin phrases) by; through
3.
as per, according to: as per specifications
4.
(informal) as per usual, as usual
abbreviation (in Britain)
1.
Professional Employment Register
prefix
1.
through: pervade
2.
throughout: perennial
3.
away, beyond: perfidy
4.
completely, throughly: perplex
5.
(intensifier): perfervid
6.
indicating that a chemical compound contains a high proportion of a specified element: peroxide, perchloride
7.
indicating that a chemical element is in a higher than usual state of oxidation: permanganate, perchlorate
8.
(not in technical usage) a variant of peroxy- persulphuric acid
prep.

1580s (earlier in various Latin and French phrases), from Latin per “through, during, by means of, on account of, as in,” from PIE root *per- (1) “Base of prepositions and preverbs with the basic meanings of ‘forward,’ ‘through,’ and a wide range of extended senses such as ‘in front of,’ ‘before,’ ‘early,’ ‘first,’ ‘chief,’ ‘toward,’ ‘against,’ ‘near,’ ‘at,’ ‘around'” [Watkins]. Cf. Sanskrit pari- “around, about, through,” pura “before, formerly;” Avestan pairi- “around,” paro “before;” Old Persian pariy; Hittite para- “on, forth;” Greek peri “around, about, near, beyond,” paros “before,” para “from beside, beyond,” pro “before;” Latin pro “before, for, on behalf of, instead of,” porro “forward,” prae “before;” Old English fore (prep.) “before, in front of;” (adv.) “before, previously;” German vor “for;” Old Church Slavonic pra-dedu “great-grandfather;” Russian pere- “through;” Lithuanian per “through;” Old Irish air- Gothic fair-, German ver-, Old English fer-, intensive prefixes.

word-forming element meaning “through, throughout; thoroughly; entirely, utterly,” from Latin preposition per (see per (prep.)).

per- pref.

1. Packed Encoding Rules.
2. partial equivalence relation.
(1998-05-27)
Perseus (constellation)
1.
period
2.
person
Persian

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