PER 



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PER 



female), in bot., the covering of 

 the pistil in the genus Carex ; 

 the membranous perianth of 

 sedges : perigynous, a., pZr-idf- 

 iri'tis, growing upon the calyx, 

 or some part which surrounds 

 the ovary in a flower ; applied to 

 corolla and stamens when attached 

 to the calyx. 



perilymph, n., p&r'i-limf (Gr. 

 peri, round about ; L. lympha, 

 water), the clear fluid secreted by 

 the serous membrane which lines 

 the osseous labyrinth of the ear. 



perimetritis, n., p^r'-i-met-rU'-is 

 (Gr. peri, round about ; metra, 

 the womb), the inflammation of 

 the peritoneal covering of the 

 uterus, usually involving neigh- 

 bouring parts. 



perimysium, n., per'$-mlz'i-um 

 (Gr. peri, round about ; mus, a 

 muscle), an outward investment 

 or sheath of areolar tissue, which 

 surrounds an entire muscle, and 

 sends partitions inwards between 

 the fasciculi, furnishing to each 

 of them a special sheath. 



perinseum, n., per'-m-d'-Urn (Gr. 

 perinaion, the part between the 

 anus and the scrotum from peri, 

 round about ; naid, I inhabit), 

 the region of the lower part of 

 the body, having the anus at its 

 centre, bounded in front by the 

 genitals, and at the sides by the 

 inner surfaces of the thighs : 

 perinaeal, a., per'-m-e'al, of or 

 pert, to the perinseum. 



perineurium, n., p^r'-i-nur'-i-um 

 (Gr. peri, round about ; neuron, 

 a nerve), the coarser sheathing of 

 the nerves, and nervous cords 

 the general term for the sheathing 

 being ' neurilemma. ' 



periodontal, a., per'i-d'ddnt'al 

 (Gr. peri, round about ; odous, a 

 tooth, odontos, of a tooth), 

 applied to the lining membrane 

 of a tooth-socket : periodontitis, 

 n., p%r'4'd-d6nt'it''is, the inflam- 

 mation of the lining membrane 

 of a tooth-socket. 



periosteum, n., p 

 (Gr. peri, round about ; osteon, 

 a bone), the fibrous sensitive 

 membrane immediately covering 

 the bone, which performs an 

 important part in its nourish- 

 ment : periosteal, a,.,p'er'-i'6sl''$'dl, 

 pert, to or connected with the 

 periosteum : periostitis, n. , p$r'- 

 i'6st'lt f 'i8, inflammation of the 

 covering membrane of the bone. 



periostracum, n., pZr'-i-dst'-rak'u 

 (Gr. peri, round about ; ostrakon, 

 a shell), in zool, the layer of 

 epidermis which covers the shell 

 in most of the Mollusca. 



periphery, n., pe'r-if'-fr't (Gr. 

 periphereid, a circumference 

 from peri, round about ; phero, 

 I carry), in bot., the outer stratum 

 of cells in a cylindrical frond : 

 peripherical, a., p%r f -i'f%r f -ik>al, 

 of or pert, to a periphery ; in 

 bot., having an embryo curved so 

 as to surround the albumen, 

 following the inner part of the 

 covering of the seed. 



periplast, n. , p%r f -i-plast (Gr. peri, 

 round about ; plasso, I mould), 

 in zoo?., the inter cellular substance 

 or matrix in which the organised 

 structures of a tissue are em- 

 bedded. 



Periploca, n., ptr-ip'-lok-a (Gr. 

 peripldke, a plaiting, a coiling 

 round from peri, round about ; 

 pleko, I twine), a handsome genus 

 of plants, Ord. Asclepiadaceae, 

 so named from the habit of the 

 species : Periploca Mauritiana, 

 maw-risK-i-an'-d (after Prince 

 Maurice, of Nassau), a species, 

 the source of the Bourbon Scam- 

 mony, and a purgative : P. Graeca, 

 grek'-a (of or from Greece}, a hardy 

 climbing plant, valuable for 

 covering naked walls. 



peripneumonia, n.,p$r4p'-nu-mon' 

 i' a (Gr. peripneumonia, inflam- 

 mation of the lungs from peri, 

 round about ; pneumon, a lung), 

 inflammation of the lungs ; 

 pneumonia. 



