Perichondritis Per`i·chon·dri"tis noun [ New Latin See
Perichondrium , and
-itis .]
(Medicine) Inflammation of the perichondrium.
Perichondrium Per`i·chon"dri·um noun [ New Latin , from Greek ... around + ... cartilage.]
(Anat.) The membrane of fibrous connective tissue which closely invests cartilage, except where covering articular surfaces.
Perichordal Per`i·chor"dal adjective Around the notochord; as, a perichordal column. See Epichordal .
Perichæth Per"i·chæth noun [ See
Perichætium .]
(Botany) The leafy involucre surrounding the fruit stalk of mosses; perichætium; perichete.
Perichætial Per`i·chæ"ti·al adjective (Botany) Of or pertaining to the perichæth.
Perichætium Per`i·chæ"ti·um noun ;
plural Perichætia . [ New Latin , from Greek ... about + ... flowing hair, foliage.]
(Botany) Same as Perichæth .
Perichætous Per`i·chæ"tous adjective [ See
Perichætium .]
(Zoology) Surrounded by setæ; -- said of certain earthworms (genus Perichætus ).
Periclase, Periclasite Per"i·clase, Per`i·cla"site noun [ Prefix
peri- + Greek ... to break.]
(Min.) A grayish or dark green mineral, consisting essentially of magnesia (magnesium oxide), occurring in granular forms or in isometric crystals.
Periclinium Per`i·clin"i·um noun ;
plural Periclinia . [ New Latin , from Greek ... around + ... a bed.]
(Botany) The involucre which surrounds the common receptacle in composite flowers.
Periclitate Pe·ric"li·tate transitive verb [ Latin
periclitatus , past participle of
periclitari , from
periculum .]
To endanger. [ Obsolete]
Periclitating , pardi! the whole family.
Sterne.
Periclitation Pe·ric`li·ta"tion noun [ Latin
periclitatio : confer French
périclitation .]
1. Trial; experiment. [ Obsolete]
2. The state of being in peril. [ Obsolete]
Pericope Pe·ric"o·pe noun [ Latin , section of a book, Greek ...; ... around + ... to cut.]
A selection or extract from a book; especially (Theol.) , a selection from the Bible, appointed to be read in the churches or used as a text for a sermon.
Pericranial Per`i·cra"ni·al adjective (Anat.) Of or pertaining to the pericranium.
Pericranium Per`i·cra"ni·um noun [ New Latin ]
(Anat.) The periosteum which covers the cranium externally; the region around the cranium.
Periculous Pe·ric"u·lous adjective [ Latin
periculosus . See
Perilous .]
Dangerous; full of peril. [ Obsolete]
Periculum Pe·ric"u·lum noun ;
plural Pericula . [ Latin ]
(Rom. & O.Eng. Law) 1. Danger; risk. 2. In a narrower, judicial sense: Accident or casus , as distinguished from dolus and culpa , and hence relieving one from the duty of performing an obligation.
Pericystitis Per`i·cys·ti"tis noun [ New Latin See
Peri- , and
Cystitis .]
(Medicine) Inflammation of the tissues surrounding the bladder.
Periderm Per"i·derm noun 1. (Botany) The outer layer of bark. 2. (Zoology) The hard outer covering of hydroids and other marine animals; the perisarc.
Peridiastole Per`i·di·as"to·le noun (Physiol.) The almost inappreciable time which elapses between the systole and the diastole of the heart.
Peridium Pe·rid"i·um noun ;
plural Peridia . [ New Latin , from Greek ... about + ..., a dim. ending.]
(Botany) The envelope or coat of certain fungi, such as the puffballs and earthstars.
Peridot Per"i·dot noun [ French
péridot .]
(Min.) Chrysolite.
Peridotite Per"i·do·tite noun [ Confer French
péridotite .]
(Min.) An eruptive rock characterized by the presence of chrysolite (peridot). It also usually contains pyroxene, enstatite, chromite, etc. It is often altered to serpentine. » The chief diamond deposits in South Africa occur in a more or less altered peridotite.
Peridrome Per"i·drome noun [ Greek ..., from ... running around, from ... to run round; ... round + ... to run: confer French
péridrome .]
(Archæol.) The space between the columns and the wall of the cella, in a Greek or a Roman temple.
Periecians Per`i·e"cians noun plural See Periœcians .
Perienteron Per`i·en"te·ron noun [ New Latin See
Peri- , and
Enteron .]
(Anat.) The primitive perivisceral cavity.
Periergy Per"i·er`gy noun [ Greek ..., from ... overcareful; ... about, beyond + ... work.]
1. Excessive care or diligence. [ Obsolete]
2. (Rhet.) A bombastic or labored style. [ R.]
Periganglionic Per`i·gan`gli·on"ic adjective (Anat.) Surrounding a ganglion; as, the periganglionic glands of the frog.
Perigastric Per`i·gas"tric adjective (Zoology) Surrounding the stomach; -- applied to the body cavity of Bryozoa and various other Invertebrata.
Perigean Per`i·ge"an adjective Pertaining to the perigee. Perigean tides ,
those spring tides which occur soon after the moon passes her perigee.
Perigee, Perigeum Per"i·gee, Per`i·ge"um noun [ New Latin
perigeum , from Greek ... about, near + ... the earth: confer French
périgée .]
(Astron.) That point in the orbit of the moon which is nearest to the earth; -- opposed to apogee . It is sometimes, but rarely, used of the nearest points of other orbits, as of a comet, a planet, etc. Called also epigee , epigeum .
Perigenesis Per`i·gen"e·sis noun (Biol.) A theory which explains inheritance by the transmission of the type of growth force possessed by one generation to another.
Perigenetic Per`i·gen"e·tic adjective (Biol.) Of or pertaining to perigenesis.
Perigone Per"i·gone noun [ Prefix
peri- + Greek ... productive organs.]
1. (Botany) (a) Any organ inclosing the essential organs of a flower; a perianth. (b) In mosses, the involucral bracts of a male flower. 2. (Zoology) A sac which surrounds the generative bodies in the gonophore of a hydroid.
Perigonium Per`i·go"ni·um noun ;
plural Perigonia . [ New Latin ]
Same as Perigone .
Perigord pie Per"i·gord pie` [ From Périgord , a former province of France.] A pie made of truffles, much esteemed by epicures.
Perigraph Per"i·graph noun [ Greek ... outline; ... round, about + ... to write.]
A careless or inaccurate delineation of anything. [ R.]
Perigynium Per`i·gyn"i·um noun ;
plural Perigynia . [ New Latin See
Perigynous .]
(Botany) Some unusual appendage about the pistil, as the bottle-shaped body in the sedges, and the bristles or scales in some other genera of the Sedge family, or Cyperaceæ .
Perigynous Pe·rig"y·nous adjective [ Prefix
peri- + Greek ... woman.]
(Botany) Having the ovary free, but the petals and stamens borne on the calyx; -- said of flower such as that of the cherry or peach.
Perihelion, Perihelium Per`i·hel"ion, Per`i·he"li·um noun ;
plural Perihelia . [ New Latin , from Greek ... about, near + ... the sun.]
(Astron.) That point of the orbit of a planet or comet which is nearest to the sun; -- opposed to aphelion .
Peril Per"il noun [ French
péril , from Latin
periculum ,
periclum , akin to
peritus experienced, skilled, and English
fare . See
Fare , and confer
Experience .]
Danger; risk; hazard; jeopardy; exposure of person or property to injury, loss, or destruction. In perils of waters, in perils of robbers.
2 Cor. xi. 26. Adventure hard
With peril great achieved.
Milton. At , or
On ,
one's peril ,
with risk or danger to one; at the hazard of. "
On thy soul's
peril ."
Shak. Syn. -- Hazard; risk; jeopardy. See
Danger .
Peril Per"il transitive verb [
imperfect & past participle Periled or
Perilled ;
present participle & verbal noun Periling or
Perilling .]
To expose to danger; to hazard; to risk; as, to peril one's life.
Peril Per"il intransitive verb To be in danger. [ Obsolete]
Milton.
Perilla Pe·ril"la noun [ Etymol. uncertain.]
(Botany) A genus of labiate herbs, of which one species ( Perilla ocimoides , or P. Nankinensis ) is often cultivated for its purple or variegated foliage.
Perilous Per"il·ous adjective [ Old French
perillous ,
perilleus , French
périlleux , Latin
periculosus . See
Peril .] [ Written also
perillous .]
1. Full of, attended with, or involving, peril; dangerous; hazardous; as, a perilous undertaking. Infamous hills, and sandy, perilous wilds.
Milton. 2. Daring; reckless; dangerous. [ Obsolete]
Latimer. For I am perilous with knife in hand.
Chaucer. --
Per"il*ous*ly ,
adverb --
Per"il*ous*ness ,
noun
Perilymph Per"i·lymph noun (Anat.) The fluid which surrounds the membranous labyrinth of the internal ear, and separates it from the walls of the chambers in which the labyrinth lies.
Perilymphangial Per`i·lym·phan"gi·al adjective (Anat.) Around, or at the side of, a lymphatic vessel.
Perilymphatic Per`i·lym·phat"ic adjective (Anat.) (a) Pertaining to, or containing, perilymph. (b) Perilymphangial.
Perimeter Per·im"e·ter noun [ Greek ...; ... around + ... measure: confer French
périmètre .]
1. (Geom.) The outer boundary of a body or figure, or the sum of all the sides. 2. An instrument for determining the extent and shape of the field of vision.
Perimetric, Perimetrical Per`i·met"ric, Per`i·met"ric·al adjective Of or pertaining to the perimeter, or to perimetry; as, a perimetric chart of the eye.
Perimetry Per·im"e·try noun The art of using the perimeter; measurement of the field of vision.
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