Periorbital, per-i-or′bi-tal, adj. pertaining to the orbit of the eye.
Periosteum, per-i-os′tē-um, n. a tough fibrous membrane which forms the outer coating of bones.—adjs. Perios′tēal, Perios′tēous; Periostit′ic.—n. Periostī′tis, inflammation of the periosteum. [Gr. periosteon—peri, around, osteon, a bone.]
Periotic, per-i-ō′tik, adj. surrounding the inner ear.—n. a periotic bone. [Gr. peri, about, ous, ōtos, the ear.]
Peripatetic, -al, per-i-pa-tet′ik, -al, adj. walking about: of or pertaining to the philosophy of Aristotle, who taught while walking up and down in the Lyceum at Athens.—n. Peripatet′ic, an adherent of the philosophy of Aristotle: one accustomed or obliged to walk: (pl.) instruction by lectures.—n. Peripatet′icism, the philosophy of Aristotle. [Gr. peripatētikos—peri, about, patein, to walk.]
Peripatus, pe-rip′ā-tus, n. a genus of myriapods.
Peripetia, per-i-pe-tī′a, n. the dénouement of a drama.
Periphery, pe-rif′ėr-i, n. (geom.) the circumference of a circle or of any closed figure: the outside of anything generally.—adjs. Periph′eral, Peripher′ic, -al. [L.—Gr. peri, around, pherein, to carry.]
Periphractic, per-i-frak′tik, adj. enclosed around. [Gr. peri, about, phrassein, to enclose.]
Periphrase, per′i-frāz, n. a round-about way of speaking: the use of more words than are necessary to express an idea: (rhet.) a figure employed to avoid a trite expression—also Periph′rasis.—v.t. or v.i. to use circumlocution.—adjs. Periphras′tic, -al, containing or expressed by periphrasis or circumlocution.—adv. Periphras′tically. [L.,—Gr. periphrasis—peri, about, phrasis, a speaking.]
Periplast, per′i-plast, n. the intercellular substance of an organ or tissue of the body.—adj. Periplast′ic.