Part 192

Pe`ri*od"ic*al*ist, n. One who publishes, or writes for, a periodical.

Pe`ri*od"ic*al*ly, adv. In a periodical manner.

Pe`ri*od"ic*al*ness, n. Periodicity.

Pe`ri*o*dic"i*ty (?), n.; pl. Periodicities (#). [Cf. F. pÈriodicitÈ.] The quality or state of being periodical, or regularly recurrent; as, the periodicity in the vital phenomena of plants. Henfrey.

Per*i"o*dide (?), n. [Pref. per- + iodide.] An iodide containing a higher proportion of iodine than any other iodide of the same substance or series.

Per`i*o*don"tal (?), a. [Pref. peri- + Gr. &?;, &?;, tooth.] (Anat.) Surrounding the teeth.

Pe`ri*od"o*scope (?), n. [Period + -scope.] (Med.) A table or other means for calculating the periodical functions of women. Dunglison.

{ ||Per`i*ú"ci, Per`i*ú"cians, } n. pl. [NL. perioeci, fr. Gr. &?;; &?; around + &?; house, dwelling.] 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 Antúci.

Per"i*o*ple (?), n. [F. pÈriople, from Gr. &?; about + &?; the hoof of a horse.] (Anat.) The external smooth horny layer of the hoof of the horse and allied animals.

Per`i*op"lic (?), a. (Anat.) Of or pertaining to the periople; connected with the periople.

Per`i*os"te*al (?), a. (Anat.) Situated around bone; of or pertaining to the periosteum.

||Per`i*os"te*um (?), n. [NL., fr. Gr. &?; round the bones; &?; around ||+ &?; a bone: cf. L. periosteon.] (Anat.) The membrane of fibrous ||connective tissue which closely invests all bones except at the ||articular surfaces.

||Per`i*os*ti"tis (?), n. [NL. See Periosteum, and -itis.] (Med.) ||Inflammation of the periosteum.

||Per`i*os"tra*cum (?), n.; pl. Periostraca (#). [NL., fr. Gr. &?; ||around + &?; shell of a testacean.] (Zoˆl.) A chitinous membrane ||covering the exterior of many shells; -- called also epidermis.

Per`i*o"tic (?), a. [Pref. peri- + Gr. &?;, &?;, the ear.] (Anat.) Surrounding, or pertaining to the region surrounding, the internal ear; as, the periotic capsule. -- n. A periotic bone.

Per`i*pa*te"cian (?), n. A peripatetic. [Obs.]

Per`i*pa*tet"ic (?), a. [L. peripateticus, Gr. &?;, fr. &?; to walk about; &?; about + &?; to walk: cf. F. pÈripatÈtique.] 1. Walking about; itinerant.

2. Of or pertaining to the philosophy taught by Aristotle (who gave his instructions while walking in the Lyceum at Athens), or to his followers. "The true peripatetic school." Howell.

Per`i*pa*tet"ic, n. 1. One who walks about; a pedestrian; an itinerant. Tatler.

2. A disciple of Aristotle; an Aristotelian.

Per`i*pa*tet"ic*al (?), a. Peripatetic. [R.] Hales.

Per`i*pa*tet"i*cism (?), n. [Cf. F. pÈripatÈtisme.] The doctrines or philosophical system of the peripatetics. See Peripatetic, n., 2. Lond. Sat. Rev.

||Pe*rip"a*tus (?), n. [NL., fr. Gr. &?; a walking about.] (Zoˆl.) A ||genus of lowly organized arthropods, found in South Africa, ||Australia, and tropical America. It constitutes the order Malacopoda.

Per`i*pet"al*ous (?), a. (Bot.) Surrounding, or situated about, the petals.

Pe*riph"er*al (?), a. 1. Of or pertaining to a periphery; constituting a periphery; peripheric.

2. (Anat.) External; away from the center; as, the peripheral portion of the nervous system.

{ Per`i*pher"ic (?), Per`i*pher"ic*al (?), } a. [Cf. F. pÈriphÈrique. See Periphery.] See Peripheral.

Pe*riph"er*y (?), n.; pl. Peripheries (#). [L. peripheria, Gr. &?;; &?; around + &?; to bear, carry: cf. F. pÈriphÈrie.] 1. The outside or superficial portions of a body; the surface.