Permeance Per"me·ance noun [ See Permeant .] Permeation; specif. (Magnetism) , the reciprocal of reluctance.

Permeant Per"me·ant adjective [ Latin permeans , present participle] Passing through; permeating. [ R.] Sir T. Browne.

Permeate Per"me·ate transitive verb [ imperfect & past participle Permeated ; present participle & verbal noun Permeating .] [ Latin permeatus , past participle of permeare to permeate; per + meare to go, pass.] 1. To pass through the pores or interstices of; to penetrate and pass through without causing rupture or displacement; -- applied especially to fluids which pass through substances of loose texture; as, water permeates sand. Woodward.

2. To enter and spread through; to pervade.

God was conceived to be diffused throughout the whole world, to permeate and pervade all things.

Cudworth.

Permeation Per`me·a"tion noun The act of permeating, passing through, or spreading throughout, the pores or interstices of any substance.

Here is not a mere involution only, but a spiritual permeation and inexistence.

Bp. Hall.

Permian Per"mi·an adjective [ From the ancient kingdom of Permia , where the Permian formation exists.] (Geol.) Belonging or relating to the period, and also to the formation, next following the Carboniferous, and regarded as closing the Carboniferous age and Paleozoic era. -- noun The Permian period. See Chart of Geology .

Permians Per"mi·ans noun plural ; sing. Permian (Ethnol.) A tribe belonging to the Finnic race, and inhabiting a portion of Russia.

Permiscible Per·mis"ci·ble adjective [ Latin permiscere to mingle; per + miscere to mix.] Capable of being mixed.

Permiss Per·miss" noun [ See Permit .] A permitted choice; a rhetorical figure in which a thing is committed to the decision of one's opponent. [ Obsolete] Milton.

Permissibility Per·mis`si·bil"i·ty noun The quality of being permissible; permissibleness; allowableness.

Permissible Per·mis"si·ble adjective That may be permitted; allowable; admissible. -- Per*mis"si*ble*ness , noun -- Per*mis"si*bly , adverb

Permission Per·mis"sion noun [ Latin permissio : confer French permission . See Permit .] The act of permitting or allowing; formal consent; authorization; leave; license or liberty granted.

High permission of all-ruling Heaven.

Milton.

You have given me your permission for this address.

Dryden.

Syn. -- Leave; liberty; license. -- Leave , Permission . Leave implies that the recipient may decide whether to use the license granted or not. Permission is the absence on the part of another of anything preventive, and in general, at least by implication, signifies approval.

Permissive Per·mis"sive adjective 1. Permitting; granting leave or liberty. "By his permissive will." Milton.

2. Permitted; tolerated; suffered. Milton.

Permissively Per·mis"sive·ly adverb In a permissive manner.

Permistion Per·mis"tion noun [ Latin permistio , permixtio , from permiscere , permistum , and permixtum . See Permiscible .] The act of mixing; the state of being mingled; mixture. [ Written also permixtion .]

Permit Per·mit" transitive verb [ imperfect & past participle Permitted ; present participle & verbal noun Permitting .] [ Latin permittere , permissum , to let through, to allow, permit; per + mittere to let go, send. See Per- , and Mission .] 1. To consent to; to allow or suffer to be done; to tolerate; to put up with.

What things God doth neither command nor forbid . . . he permitteth with approbation either to be done or left undone.

Hooker.

2. To grant (one) express license or liberty to do an act; to authorize; to give leave; -- followed by an infinitive.

Thou art permitted to speak for thyself.

Acis xxvi. 1.

3. To give over; to resign; to leave; to commit.

Let us not aggravate our sorrows,
But to the gods permit the event of things.

Addison.

Syn. -- To allow; let; grant; admit; suffer; tolerate; endure; consent to. -- To Allow , Permit , Suffer , Tolerate . To allow is more positive, denoting (at least originally and etymologically) a decided assent, either directly or by implication. To permit is more negative, and imports only acquiescence or an abstinence from prevention. The distinction, however, is often disregarded by good writers. To suffer has a stronger passive or negative sense than to permit , sometimes implying against the will, sometimes mere indifference. To tolerate is to endure what is contrary to will or desire. To suffer and to tolerate are sometimes used without discrimination.

Permit Per·mit" intransitive verb To grant permission; to allow.

Permit Per"mit noun Warrant; license; leave; permission; specifically, a written license or permission given to a person or persons having authority; as, a permit to land goods subject to duty.

Permit Per·mit" noun [ Confer Spanish palamida a kind of scombroid fish.] (a) A large pompano ( Trachinotus goodei ) of the West Indies, Florida, etc. It becomes about three feet long. (b) The round pompano. ( T. falcatus ). [ Local, U. S.]

Permittance Per·mit"tance noun The act of permitting; allowance; permission; leave. Milton.

Permittee Per`mit·tee" noun One to whom a permission or permit is given.

Permitter Per·mit"ter noun One who permits.

A permitter , or not a hinderer, of sin.

J. Edwards.

Permix Per·mix" transitive verb To mix; to mingle. [ Obsolete]

Permixtion Per·mix"tion noun See Permission .

Permulator Per"mu·la`tor noun (Electricity) A special form of rotary converter with stationary commutator and rotating brushes, in which the exciting field is induced by the alternating current in a short-circuited magnetic core instead of being produced by an external magnet.

Permutable Per·mut"a·ble adjective [ Confer French permutable .] Capable of being permuted; exchangeable. -- Per*mut"a*ble*ness , noun -- Per*mut"a*bly , adverb

Permutation Per`mu·ta"tion noun [ Latin permutatio : confer French permutation . See Permute .] 1. The act of permuting; exchange of the thing for another; mutual transference; interchange.

The violent convulsions and permutations that have been made in property.

Burke.

2. (Math.) (a) The arrangement of any determinate number of things, as units, objects, letters, etc., in all possible orders, one after the other; -- called also alternation . Confer Combination , noun , 4. (b) Any one of such possible arrangements.

3. (Law) Barter; exchange.

Permutation lock , a lock in which the parts can be transposed or shifted, so as to require different arrangements of the tumblers on different occasions of unlocking.

Permute Per·mute" transitive verb [ Latin permutare , permutatum ; per + mutare to change: confer French permuter .] 1. To interchange; to transfer reciprocally.

2. To exchange; to barter; to traffic. [ Obsolete]

Bought, trucked, permuted , or given.

Hakluyt.

Permuter Per·mut"er noun One who permutes.

Pern Pern transitive verb [ See Pernancy .] To take profit of; to make profitable. [ Obsolete] Sylvester.

Pern Pern noun (Zoology) The honey buzzard.

Pernancy Per"nan·cy noun [ Old French prenance , from prendre , prenre , penre , to take, Latin prendere , prehendere .] (Law) A taking or reception, as the receiving of rents or tithes in kind, the receiving of profits. Blackstone.

Pernel Per"nel noun See Pimpernel . [ Obsolete]

Pernicion Per·ni"cion noun [ See 2d Pernicious .] Destruction; perdition. [ Obsolete] hudibras.

Pernicious Per·ni"cious adjective [ Latin pernix , -icis .] Quick; swift (to burn). [ R.] Milton.

Pernicious Per·ni"cious adjective [ Latin perniciosus , from pernicies destruction, from pernecare to kill or slay outright; per + necare to kill, slay: confer French pernicieux . Confer 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 , adverb , -- Per*ni"cious*ness , noun

Pernicity Per·nic"i·ty noun [ Latin pernicitas . See 1st Pernicious .] Swiftness; celerity. [ R.] Ray.

Pernickety Pernicketty Per·nick"et·y Per·nick"et·ty adjective Finical or fussy; full of petty details. [ Colloq.]

Pernio Per"ni·o noun [ Latin ] (Medicine) A chilblain.

Pernoctalian Per`noc·ta"li·an noun One who watches or keeps awake all night.

Pernoctation Per`noc·ta"tion noun [ Latin pernoctatio , from 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.

Pernor Per"nor noun [ See Pern , v. ] (Law) One who receives the profits, as of an estate.

Pernot furnace Per"not fur"nace [ So called from Charles Pernot , its inventor.] A reverberatory furnace with a circular revolving hearth, -- used in making steel.

Pernyi moth Per"ny·i moth" (Zoology) A silk- producing moth ( Attacus Pernyi ) which feeds upon the oak. It has been introduced into Europe and America from China.

Perofskite Per·of"skite noun [ From von Perovski , of St.Petersburg.] (Min.) A titanate of lime occurring in octahedral or cubic crystals. [ Written also Perovskite .]

Perogue Pe·rogue noun See Pirogue .

Peronate Per"o·nate adjective [ Latin peronatus rough...booted, from pero , -onis , a kind of rough boot.] (Botany) A term applied to the stipes or stalks of certain fungi which are covered with a woolly substance which at length becomes powdery. Henslow.

Peroneal Per`o·ne"al adjective [ Greek ... the fibula.] (Anat.) Of or pertaining to the fibula; in the region of the fibula.

Perorate Per"o·rate intransitive verb [ See Peroration .] To make a peroration; to harangue. [ Colloq.]

Peroration Per`o·ra"tion noun [ Latin peroratio , from 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.

Peroxidation Per·ox`i·da"tion noun Act, process, or result of peroxidizing; oxidation to a peroxide.

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