A layer of thin-walled young cells in a growing stem, in which layer certain new vessels originate.

Of or pertaining to pericardium; situated around the heart.

Pericardiac.

Pericardiac.

Inflammation of the pericardium.

The double baglike fold of serous membrane which incloses the heart.

The ripened ovary; the walls of the fruit. See Illusts. of Capsule, Drupe, and Legume.

Of or pertaining to a pericarp.

Surrounding a cell; as, the pericellular lymph spaces surrounding ganglion cells.

The leafy involucre surrounding the fruit stalk of mosses; perichaetium; perichete.

Of or pertaining to the perich/th.

Same as Perich/th.

Surrounded by set/; -- said of certain earthworms (genus Perich/tus).

Same as Perich/th.

Of or pertaining to the perichondrium; situated around cartilage.

Inflammation of the perichondrium.

The membrane of fibrous connective tissue which closely invests cartilage, except where covering articular surfaces.

Around the notochord; as, a perichordal column. See Epichordal.

A grayish or dark green mineral, consisting essentially of magnesia (magnesium oxide), occurring in granular forms or in isometric crystals.

The involucre which surrounds the common receptacle in composite flowers.

To endanger.

Trial; experiment.

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.

Of or pertaining to the pericranium.

The periosteum which covers the cranium externally; the region around the cranium.

Dangerous; full of peril.

Danger; risk.

Inflammation of the tissues surrounding the bladder.

The outer layer of bark.

The almost inappreciable time which elapses between the systole and the diastole of the heart.

The envelope or coat of certain fungi, such as the puffballs and earthstars.

Chrysolite.

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 space between the columns and the wall of the cella, in a Greek or a Roman temple.

See Peri/cians.

The primitive perivisceral cavity.

Excessive care or diligence.

Surrounding a ganglion; as, the periganglionic glands of the frog.

Surrounding the stomach; -- applied to the body cavity of Bryozoa and various other Invertebrata.

Pertaining to the perigee.

A theory which explains inheritance by the transmission of the type of growth force possessed by one generation to another.

Of or pertaining to perigenesis.

That point, in the orbit of the moon or other body orbiting the earth, which is nearest to the earth; -- opposed to apogee. It is sometimes, but rarely, used of the nearest points of bodies not orbiting the earth, such as of a comet, a planet, etc. Called also epigee, epigeum.

Any organ inclosing the essential organs of a flower; a perianth. In mosses, the involucral bracts of a male flower.

Same as Perigone.

A careless or inaccurate delineation of anything.

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 Cyperace/.

Having the ovary free, but the petals and stamens borne on the calyx; -- said of a flower such as that of the cherry or peach.

That point of the orbit of a planet or comet which is nearest to the sun; -- opposed to aphelion.

To be in danger.

A genus of labiate herbs, of which one species (Perilla ocimoides, or Perilla Nankinensis) is often cultivated for its purple or variegated foliage.

Full of, attended with, or involving, peril; dangerous; hazardous; as, a perilous undertaking.

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.

Around, or at the side of, a lymphatic vessel.

Pertaining to, or containing, perilymph. Perilymphangial.

The outer boundary of a body or figure, or the sum of all the sides.

Of or pertaining to the perimeter, or to perimetry; as, a perimetric chart of the eye.

The art of using the perimeter; measurement of the field of vision.

A crystal of one species inclosing one of another species. See Endomorph.

Surrounding a muscle or muscles. Of or pertaining to the perimysium.

See Perineum.

Of or pertaining to the perineum.

The act or process of restoring an injured perineum.

The operation of sewing up a ruptured perineum.

Inflammation of the cellular tissue around the kidney.

The region which is included within the outlet of the pelvis, and is traversed by the urinogenital canal and the rectum.

Surrounding nerves or nerve fibers; of or pertaining to the perineurium.

The connective tissue sheath which surrounds a bundle of nerve fibers. See Epineurium, and Neurilemma.

Of or pertaining to a nucleus; situated around a nucleus; as, the perinuclear protoplasm.

To come to a period; to conclude. [Obs.] /You may period upon this, that,/ etc.

A salt of periodic acid.

Pertaining to, derived from, or designating, the highest oxygen acid (HIO4) of iodine.

A magazine or other publication which appears at stated or regular intervals.

Of or pertaining to a period or periods, or to division by periods.

One who publishes, or writes for, a periodical.

In a periodical{4} manner; as, flooding occurs periodically in the valley.

Periodicity.

The quality or state of being periodical, or regularly recurrent; as, the periodicity in the vital phenomena of plants.

An iodide containing a higher proportion of iodine than any other iodide of the same substance or series.

Surrounding the teeth.

A disease that attacks the gum and bone around the teeth.

A table or other means for calculating the periodical functions of women.

Those who live on the same parallel of latitude but on opposite meridians, so that it is noon in one place when it is midnight in the other. Compare Ant/ci.

The external smooth horny layer of the hoof of the horse and allied animals.

Of or pertaining to the periople; connected with the periople.

Situated around bone; of or pertaining to the periosteum.

The membrane of fibrous connective tissue which closely invests all bones except at the articular surfaces.

Inflammation of the periosteum.

A chitinous membrane covering the exterior of many shells; -- called also epidermis.

Surrounding, or pertaining to the region surrounding, the internal ear; as, the periotic capsule. A periotic bone.

A peripatetic.

One who walks about; a pedestrian; an itinerant.

Peripatetic.

The doctrines or philosophical system of the peripatetics. See Peripatetic, n., 2.

The type genus of Peripatopsidae, consisting of onychophorans (lowly organized invertebrates related evolutionarily to the arthropods, also called /walking worms/ AND /velvet worms/) found chiefly in Asiatic and African tropical regions, in South Africa, Australia, New Zealand, and tropical America.

Surrounding, or situated about, the petals.

Of or pertaining to a periphery; constituting a periphery; peripheric.

See Peripheral.

The outside or superficial portions of a body; the surface.

To use circumlocution.

See Periphrase.

Expressing, or expressed, in more words than are necessary; characterized by periphrase; circumlocutory.

With circumlocution.

Same as Periblast.

Of or pertaining to peripneumonia.

Pneumonia.

The region surrounding the anus, particularly of echinoderms.

Inflammation of the tissues about the rectum.

Having columns on all sides; -- said of an edifice. See Apteral.

Peripteral.

The region surrounding a moving body, such as the wing of a bird or a gliding a/roplane, within which cyclic or vortical motion of the air occur.

A kind of tobacco with medium-sized leaf, small stem, tough and gummy fiber, raised in Louisiana, and cured in its own juices, so as to be very dark colored, usually black. It is marketed in tightly wrapped rolls called carottes.

The outer, hardened integument which covers most hydroids.

Having the shadow moving all around.

Those who live within a polar circle, whose shadows, during some summer days, will move entirely round, falling toward every point of the compass.

A general or comprehensive view.

Viewing all around, or on all sides.

To cause perish.

Perishableness.

Liable to perish; subject to decay, destruction, or death; as, perishable goods; our perishable bodies.