Per- \Per-\ [See Per.]
1. A prefix used to signify through, throughout, by, for, or
as an intensive as perhaps, by hap or chance; perennial,
that lasts throughout the year; perforce, through or by
force; perfoliate, perforate; perspicuous, evident
throughout or very evident; perplex, literally, to
entangle very much.
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2. (Chem.) Originally, denoting that the element to the name
of which it is prefixed in the respective compounds
exercised its highest valence; now, only that the element
has a higher valence than in other similar compounds;
thus, barium peroxide is the highest oxide of barium;
while nitrogen and manganese peroxides, so-called, are not
the highest oxides of those elements.
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Per \Per\, prep. [L. Cf. Far, For-, Pardon, and cf. Par,
prep.]
Through; by means of; through the agency of; by; for; for
each; as, per annum; per capita, by heads, or according to
individuals; per curiam, by the court; per se, by itself, of
itself. Per is also sometimes used with English words.
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Per annum, by the year; in each successive year; annually.
per cent, Per centum, percent, by the hundred; in the
hundred; a proportion multiplied by one hundred; -- used
esp. of proportions of ingredients, rate or amount of
interest, and the like; most commonly used in the
shortened form per cent; as, 5 is ten per cent of 50. It
is commonly symbolized with the per cent sign, "%".
Per diem, by the day. [For other phrases from the Latin,
see Quotations, Phrases, etc., from Foreign Languages, in
the Supplement.]
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PER. By. When a writ of entry is sued out against the alienee, or descendant
of the original disseisor, it is then said to be brought in the per, because
the writ states that the tenant had not the entry but by the original wrong
doer. 3 Bl. Com. 181. See Entry, writ of.
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