PERIDIDYMIS 



1046 



PERIHEPATITIS 



dilatation]. The short interval that succeeds the dias- 

 tole in the cycle of the heart's action. 



Perididymis (per- id-id' -im-is) [irepi, around ; didv/xog, 

 testicle]. The tunica albuginea testis. 



Perididymitis [per-id-id-im-i' -tis\ [irepi, around ; didv- 

 /tog, testicle; trig, inflammation]. Inflammation of 

 the perididymis. 



Perididymium (per-id-id-im'-e-um). Synonym of 

 Perididymis. 



Peridiiform ( per-id' -e-iform) [irr/pidiov, a small leather 

 pouch ; forma, form]. In biology, having the form of 

 a peridium. 



Peridiodynia (per-id-e-o-din' -e-ah). Synonym of Car- 

 dialgia. 



Peridiole (per-id f -e-ol). Same as Peridiolum. 



Peridiolum (per-id-i' '-o-lum) [dim. of irrjp'uhov, a little 

 pouch]. In biology, the tunic of the sporangium in 

 the A T idtdariace<z ; a secondary or smaller peridium 

 containing a hymenium. 



Peridium (per - id' - e - um) [irrjpidiov, dim. of irijpa, a 

 leather pouch, wallet : pi. , Peridid\. In biology, the 

 covering of a spore-case, as a puff-ball. 



Periencephalitis (per-e-en-sefal-i' '-tis) [irepi, around ; 

 kyuecpa'Aov, brain; trig, inflammation]. Phrenitis 

 mania gravis ; Typhomania, BelPs Disease {Luther 

 Bell). Inflammation of the pia and of the super- 

 ficies of the brain. The acute form is usually fatal, and 

 is attended by stupor, wild delirium, general disturb- 

 ance of the psychic functions, restlessness, convul- 

 sions, and fever. The chronic form is the so-called 

 General Paralysis of the Insane. 



Periendymal (per - e - en'- dim - al). Same as Peri- 

 ependymal. 



Perienteric (per-e-en-ter' '-ik) [irepi, around ; evrepov, 

 intestine]. Situated around the enteron ; perivisceral. 



Perienteritis ( per-e-en-ter-i'-tis) [irepi, around ; evrepov, 

 intestine ; ing, inflammation] Inflammation of the 

 intestinal peritoneum. 



Perienteron (per-e-en' -ler-on) [irepi, around ; evrepov, 

 intestine]. The primitive perivisceral cavity; the 

 space between the entoderm and the ectoderm, the 

 forerunner of the schizocele or enterocele. 



Periependymal (per-e-ep-en'-dim-al) [irepi, around; 

 eirevthua, ependyma]. Situated, or occurring, out- 

 side the ependyma. 



Perieresis (per-e-er'-es-is) [irep/.aipeiv, to take off]. A 

 circular incision around a tumor or abscess. 



Periesophageal (per-e-e-so-fa-je'-al) [irepi, around; 

 oiaotj>ayog, esophagus]. Situated, or occurring, just 

 outside of, or around, the esophagus. 



Periesophagitis (per-e-e-sofaj-i' '-tis) [irepi, around ; 

 oiaotyayog, esophagus; trig, inflammation]. Inflam- 

 mation of the tissues that surround the esophagus. 



Perifascicular (per-e-fas-ik' '-u-lar) [irepi, around \fas- 

 ciculns, a fascicle]. Surrounding a fasciculus. 



Perifibral, Perifibrous, { per-if-i' -bral, per-if-i' -brus) 

 [irepi , around ; fibra, a fiber]. Surrounding a fiber. 



Perifolliculitis (per-ifol-ik-u-li'-tis) [irepi, around; 

 folliculus, follicle ; trig, inflammation] . Inflammation 

 around the hair- follicles. P., Conglomerative Pus- 

 tular, a rare skin-affection, characterized by an eruption 

 usually on the backs of the hands and on the buttocks, 

 of from one to a dozen oval or roundish patches, from 

 half an inch to two inches in diameter, and raised from 

 about a line to a quarter of an inch. The surface is 

 smooth or slightly mammillated and cribriform, the 

 orifices being filled at first with pus, while the hairs, 

 if any, have generally fallen out. There are also 

 numerous unruptured superficial pustules. There is 

 some itching and heat, but no pain or glandular en- 

 largement. The disease is a local one of short duration 

 and leaves no scar. The etiology is unknown. 



Perifolliculosis (per-ifol-ik-u-lo' '-sis) [irepi, around; 

 folliculus, a follicle; voaog, disease]. A follicular 

 skin-affection. 



Perigamium (per-ig-a' -me-um) [irepi, around ; ya/iog, 

 marriage]. In biology, an involucre in certain cryp- 

 togams, inclosing both male and female reproductive 

 organs. 



Perigangliitis {per - ig - ang- git •- i> '- lis) [irepi, around ; 

 ydyyAiov, ganglion ; trtg, inflammation]. Inflamma- 

 tion of the tissues surrounding a ganglion. 



Periganglionic (per-ig-ang-gle-on' -ik) [irepi, around ; 

 ydyyAiov, ganglion]. Situated, or occurring, around 

 a ganglion. P. Glands, tubular glands found in the 

 the spinal ganglia of frogs and other animals. They 

 contain a milky, calcareous fluid. 



Perigastric (per-ig-as'-trik) [irepi, around; yaoTt]p, 

 stomach]. In biology, pertaining to the tissues or 

 spaces about the alimentary canal. 



Perigastritis (per-ig-as-tri' '-tis) [irepi, around ; yaorfp, 

 stomach; trig, inflammation]. Inflammation of the 

 peritoneal coat of the stomach. 



Perigastrula [per-ig-as' '-tru-lah) [irepi, around ; }ac- 

 rrjp, belly, stomach: pi. , Perigastruhc\ In biology, 

 the form of gastrula which results from the surface- 

 cleavage of the egg ; a bladder-gastrula, the common 

 form among arthropods. 



Perigastrular (per-ig-as' '-tru-lar)[irepi, around ; yaari t p, 

 stomach]. Pertaining to the perigastrula. 



Perigastrulation {per-ig-as-tru-la'-shun)[-Kepi, around ; 

 yacrijp, belly, stomach]. In biology, the formation 

 of a bladder-gastrula. 



Perigenesis {per-ij-en'-es-is) [irepi, about; yeveaig, 

 origin]. In biology, a dynamic theory of reproduc- 

 tion proposed by Cope and adopted by Hceckel. It 

 explains inheritance by the transmission of the type 

 of growth-force from one generation to another. 



Periglottic (per-ig-lof -ik) [irepi, around ; y'/.ioaca, the 

 tongue]. Situated around the base of the epiglottis. 



Periglottis (per-ig-lof -is) [irepi, around ; y/iuaca, the 

 tongue]. The mucous membrane or villous coating 

 of the tongue. 



Perignathic (per-ig-na' -thik) [irepi, around ; ; 

 jaw]. Situated about the jaw. 



Perigone (per' '-ig-on) [irepi, around; yovi), seed, gen- 

 eration.] See Perianth. 



Perigonium (per - ig - o' '- ne - um) [irepi, around ; ywff, 

 seed: pi. , Perigonia\ In biology: (a) th< 

 formed by the ectodermal layers of the gonophore of a 

 hydroid; (b) the leafy envelop surrounding the jut- 

 ianth of the antheridia in mosses. 



Perigraph ( per' '- ig - raf ') [irepi, around; ypatyeir, to 

 inscribe]. The linea alba and linese transversa; of 

 the rectus abdominis muscle. 



Perigyne (per'-ij-in). Same as Perigynium. 



Perigynium (per-ijin'-e-um) [irepi, about; ywi), a 

 female: pi. , Perigynia~\. In biology, a term applied 

 to the scale-like or bristle-like bodies surrounding the 

 pistils in sedges. Also, the envelop that in liver- 

 worts invests the archegonia. 



Perigynous [per- ij'-in-us) [irepi, around; ;• 

 female]. In biology, applied to stamens and petals 

 when they are adnate to the throat of the calyx, and 

 therefore borne around the pistil instead ol a 

 base. 



Perigyny {per-if-in-e) [irepi, about; yvvfj, female]. In 

 biology, the state or condition of being perigynous. 



Perihepatic (per - e - he ■ pat' - ik) [irepi, around; 



liver]. Surrounding, or occurring around, the liver. 



Perihepatitis ( per-e-hep-at-i f -tis) [irepi, around ; 

 liver; trig, inflammation]. Inflammation of th 

 ous covering of the liver. It may be local, or a part 

 of a general peritonitis. It is marked by severe pain, 



