Part 187

||Pe*rib"o*los (?), n. [Nl., fr. Gr. &?;, fr. &?;, adj., going round, ||fr. &?; to throw round; cf. L. peribolus.] In ancient architecture, ||an inclosed court, esp., one surrounding a temple.

Per`i*bran"chi*al (?), a. (Anat.) Surrounding the branchiÊ; as, a peribranchial cavity.

Per`i*bran"chi*al (?), a. (Anat.) Around the bronchi or bronchial tubes; as, the peribronchial lymphatics.

||Per`i*cam"bi*um (?), n. [NL. See Peri-, and Cambium.] (Biol.) A layer ||of thin-walled young cells in a growing stem, in which layer certain ||new vessels originate.

{ Per`i*car"di*ac (?), Per`i*car"di*al (?), } a. (Anat.) Of or pertaining to pericardium; situated around the heart.

Pericardial fluid (Physiol.), a serous fluid of a pale yellow color contained in the pericardium.

Per`i*car"di*an (?), a. Pericardiac.

Per`i*car"dic (?), a. Pericardiac.

||Per`i*car*di"tus (?), n. [NL. See Pericardium, and -itis.] (Med.) ||Inflammation of the pericardium. Dunglison.

Per`i*car"di*um (?), n. [NL., fr. Gr. &?;, fr. &?; about or near the heart; &?; about + &?; heart.] (Anat.) The double baglike fold of serous membrane which incloses the heart.

The inner layer is closely adherent to the outer surface of the heart, and is called the cardiac pericardium. The outer layer loosely incloses the heart and the adherent inner layer, and is called the parietal pericardium. At the base of the heart the two layers are continuous, and form a narrow closed cavity filled with fluid, in which the pulsations of the heart cause little friction.

Per"i*carp (?), n. [Gr. &?;; &?; around + &?; fruit: cf. F. pÈricarpe.] (Bot.) The ripened ovary; the walls of the fruit. See Illusts. of Capsule, Drupe, and Legume.

{ Per`i*car"pi*al (?), Per`i*car"pic (?) }, a. (Bot.) Of or pertaining to a pericarp.

Per`i*cel"lu*lar (?), a. (Anat.) Surrounding a cell; as, the pericellular lymph spaces surrounding ganglion cells.

Per"i*chÊth (?), n. [See PerichÊtium.] (Bot.) The leafy involucre surrounding the fruit stalk of mosses; perichÊtium; perichete.

Per`i*chÊ"ti*al (?), a. (Bot.) Of or pertaining to the perichÊth.

||Per`i*chÊ"ti*um (?), n.; pl. PerichÊtia (#). [NL., fr. Gr. &?; about ||+ &?; flowing hair, foliage.] (Bot.) Same as PerichÊth.

Per`i*chÊ"tous (?), a. [See PerichÊtium.] (Zoˆl.) Surrounded by setÊ; -- said of certain earthworms (genus PerichÊtus).

Per"i*chete (?), n. Same as PerichÊth.

Per`i*chon"dri*al (?), a. (Anat.) Of or pertaining to the perichondrium; situated around cartilage.

||Per`i*chon*dri"tis (?), n. [NL. See Perichondrium, and -itis.] (Med.) ||Inflammation of the perichondrium.

||Per`i*chon"dri*um (?), n. [NL., fr. Gr. &?; around + &?; cartilage.] ||(Anat.) The membrane of fibrous connective tissue which closely ||invests cartilage, except where covering articular surfaces.

Per`i*chor"dal (?), a. Around the notochord; as, a perichordal column. See Epichordal.

{ Per"i*clase (?), Per`i*cla"site (?), } n. [Pref. peri- + Gr. &?; to break.] (Min.) A grayish or dark green mineral, consisting essentially of magnesia (magnesium oxide), occurring in granular forms or in isometric crystals.

||Per`i*clin"i*um (?), n.; pl. Periclinia (#). [NL., fr. Gr. &?; around ||+ &?; a bed.] (Bot.) The involucre which surrounds the common ||receptacle in composite flowers.

Pe*ric"li*tate (?), v. t. [L. periclitatus, p. p. of periclitari, fr. periculum.] To endanger. [Obs.]

Periclitating, pardi! the whole family.

Sterne.