Per"nel (?), n. See Pimpernel. [Obs.]

Per*ni"cion (?), n. [See 2d Pernicious.] Destruction; perdition. [Obs.]

hudibras.

Per*ni"cious (?), a. [L. pernix, -icis.] Quick; swift (to burn). [R.]

Milton.

Per*ni"cious, a. [L. perniciosus, from pernicies destruction, from

pernecare to kill or slay outright; per + necare to kill, slay: cf. F.

pernicieux. Cf. Nuisance, Necromancy.] Having the quality of injuring

or killing; destructive; very mischievous; baleful; malicious; wicked.

Let this pernicious hour Stand aye accursed in the calendar.

Shak.

Pernicious to his health.

Prescott.

Syn. -- Destructive; ruinous; deadly; noxious; injurious; baneful;

deleterious; hurtful; mischievous.

-- Per*ni"cious*ly, adv., -- Per*ni"cious*ness, n.

Per*nic"i*ty (?), n. [L. pernicitas. See 1st Pernicious.] Swiftness;

celerity. [R.] Ray.

||Per"ni*o (?), n. [L.] (Med.) A chilblain.

Per`noc*ta"li*an (?), n. One who watches or keeps awake all night.

Per`noc*ta"tion (?), n. [L. pernoctatio, fr. pernoctare to stay all

night; per + nox, noctis, night.] The act or state of passing the whole

night; a remaining all night. "Pernoctation in prayer." Jer. Taylor.

Per"nor (?), n. [See Pern, v.] (Law) One who receives the profits, as

of an estate.

Per"not fur"nace (?). [So called from Charles Pernot, its inventor.] A

reverberatory furnace with a circular revolving hearth, -- used in

making steel.

Per"ny*i moth" (?). (Zoˆl.) A silk- producing moth (Attacus Pernyi)

which feeds upon the oak. It has been introduced into Europe and

America from China.

Per*of"skite (?), n. [From von Perovski, of St.Petersburg.] (Min.) A

titanate of lime occurring in octahedral or cubic crystals. [Written

also Perovskite.]

Pe*rogue (?), n. See Pirogue.

Per"o*nate (?), a. [L. peronatus rough&?;booted, fr. pero, -onis, a

kind of rough boot.] (Bot.) A term applied to the stipes or stalks of

certain fungi which are covered with a woolly substance which at length

becomes powdery. Henslow.

Per`o*ne"al (?), a. [Gr. &?; the fibula.] (Anat.) Of or pertaining to

the fibula; in the region of the fibula.

Per"o*rate (?), v. i. [See Peroration.] To make a peroration; to

harangue. [Colloq.]

Per`o*ra"tion (?), n. [L. peroratio, fr. perorate, peroratum, to speak

from beginning to end; per + orate to speak. See Per-, and Oration.]

(Rhet.) The concluding part of an oration; especially, a final summing

up and enforcement of an argument. Burke.

Per*ox`i*da"tion (?), n. Act, process, or result of peroxidizing;

oxidation to a peroxide.

Per*ox"ide (?), n. (Chem.) An oxide containing more oxygen than some

other oxide of the same element. Formerly peroxides were regarded as

the highest oxides. Cf. Per-, 2.

Per*ox"i*dize (?), v. t. [imp. & p. p. Peroxidized (?); p. pr. & vb. n.

Peroxidizing.] (Chem.) To oxidize to the utmost degree, so as to form a

peroxide.

Per*pend" (?), v. t. [L. perpendere, perpensum; per + pendere to

weight.] To weight carefully in the mind. [R.] "Perpend my words."

Shak.

Per*pend", v. i. To attend; to be attentive. [R.] Shak.

Per*pend"er (?), n. [F. parpaing, pierre parpaigne; of uncertain

origin.] (Masonry) A large stone reaching through a wall so as to

appear on both sides of it, and acting as a binder; -- called also

perbend, perpend stone, and perpent stone.

Per*pen"di*cle (?), n. [L. perpendiculum; per + pendere to hang: cf. F.

perpendicule.] Something hanging straight down; a plumb line. [Obs.]

Per`pen*dic"u*lar (?), a. [L. perpendicularis, perpendicularius: cf. F.

perpendiculaire. See Perpendicle, Pension.] 1. Exactly upright or

vertical; pointing to the zenith; at right angles to the plane of the

horizon; extending in a right line from any point toward the center of

the earth.

2. (Geom.) At right angles to a given line or surface; as, the line ad

is perpendicular to the line bc.

Perpendicular style (Arch.), a name given to the latest variety of

English Gothic architecture, which prevailed from the close of the 14th

century to the early part of the 16th; -- probably so called from the

vertical style of its window mullions.

Per`pen*dic"u*lar (?), n. 1. A line at right angles to the plane of the

horizon; a vertical line or direction.

2. (Geom.) A line or plane falling at right angles on another line or

surface, or making equal angles with it on each side.

Per`pen*dic`u*lar"i*ty (?), n. [Cf. F. perpendicularitÈ.] The quality

or state of being perpendicular.

Per`pen*dic"u*lar*ly (?), adv. In a perpendicular manner; vertically.

Per"pend stone` (?). See Perpender.

Per*pen"sion (?), n. [See Perpend.] Careful consideration; pondering.

[Obs.] Sir T. Browne.

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