PERSPIRATION 



1056 



PETECHIA 



Perspiration (per -spi-ra'- shun) [perspiratio ; pers- 

 pirare, to perspire]. Excretion of liquid from the skin, 

 mainly by sweat-glands ; sweating. The liquid so 

 excreted ; the sweat. 



Perspiratory (per-spi'-ra-to-re)[perspirare, to perspire]. 

 Pertaining to perspiration. Causing perspiration. 



Perspire (per-splr') [perspirare, to perspire]. To 

 sweat ; to evacuate the fluids of the body through the 

 emunctories of the skin. 



Persultation (per-sul-ta' -shun) \_persultare, to leap]. 

 A sudden, profuse sweat. 



Perturbation (per-ier-ba' '-shun) [perturbatio ; pertur- 

 bare, to disturb]. Restlessness or disquietude. The 

 employment of means that arrest or modify the devel- 

 opment of a morbid state. 



Pertusate (per-tu'-sat) [pertundere, to bore through]. 

 In biology, having a perforated apex. 



Pertuse [per- tils') [per, through ; tundere, to strike]. 

 In biology, having perforations, holes, or slits. 



Pertusorium (per-tus-o' '-re-um) \_pertundere, to pierce]. 

 An instrument for perforating the fetal membranes. 



Pertussal ( per-tus'-al) [per, intensive ; tussis, a cough] . 

 Pertaining to or of the nature of whooping-cough. 



Pertussis (per-tus'-is) [per, through ; tussis, cough]. 

 Whooping-cough, a contagious disease, confined usu- 

 ally to childhood and youth, and marked by spasmodic 

 coughing ended by a " whoop, " and sometimes by vom- 

 iting. Its course lasts usually for a period of six or 

 seven weeks. It is rarely fatal. It is divided into a 

 catarrhal or prodromal stage, and a paroxysmal stage. 

 The period of incubation is about two weeks. During 

 the height of the disease, hemorrhages may occur from 

 the nose, mouth, or ears, or into the subconjunctival 

 tissues, even into the brain or its meninges. Broncho- 

 pneumonia is a frequent complication. Affanasiew has 

 found a small bacillus in the expectoration, which he 

 considers the etiologic factor. The presence of this 

 bacillus has been confirmed by others. See Bacillus 

 tussis convulsive? under Bacteria, Synonymatic Table of. 



Peru, Balsam of. See Balsam. 



Perulate (per'-u-ldt) [perula, a scale]. In biology, 

 having scales (perulce), such as bud-scales. 



Penile (per'-ul) [Tri/pa, a purse, wallet]. In biology, 

 a bud-scale. 



Peruvian (pe-ru'-ve-an) [Peru]. Pertaining to Peru. 

 P. Bark. See Bark, Peruvian, and Cinchona. P. 

 Wart. See Verruga peruana and Bacillus of Verruga 

 peruana under Bacteria, Synonymatic Table of. 



Peruvin (pe-ru'-vin) [Peru ]. The name given to the 

 cinnamic alcohol derived from balsam of Peru. 



Perversion (per-ver'-zhun) [/^through; vertere, to 

 turn]. The state of being turned away from the nor- 

 mal course, as in the modifications of function in 

 disease. P., Sexual, abnormality of the sexual in- 

 stinct ; desire for unnatural methods of sexual gratifica- 

 tion. 



Pervert {per' -vert) [per, through ; vertere, to turn]. 

 One who has turned from the right way. P., Sexual, 

 a person whose sexual instincts are perverted. 

 Pervigilium (per-vij-il* '-e-um) [per, through ; vigilium, 



a watch] . Insomnia ; wakefulness. 

 Pervious (per'-ve-us) [per, through; via, way]. Open ; 



permeable. 

 Pes {pes) [L.]. A foot, or foot-like part or organ. P. 

 accessorius, the Eminentia collateralis, a smooth, 

 white eminence in the brain, situated at the junction of 

 the posterior and descending cornua of the lateral ven- 

 tricle. P. anticus. Same as A/anus. P. contortus. 

 Synonym of Club-foot. P. depressus. Synonym of 

 Flat foot. P. equino-varus. Same as Talipes equino- 

 varus. P. equinus. See Talipes equinus. P. hip- 

 pocampi major, the large, lower portion of the hip- 



pocampus major. P. hippocampi minor. Same as 

 Hippocampus minor . P. planus. Synonym of Flat- 

 foot. P. valgus. Synonym of Talipes valgus. P. 

 varus. Synonym of Talipes varus. 



Pessary ( pes' -ar-e) [neaaog, an oval-shaped stone]. An 

 instrument placed in the vagina to hold the uterus in 

 position. 



Pessima (pes'-im-ah) [L. ]. A skin -affection character- 

 ized by pustular lesions, hard and yellowish and sur- 

 rounded by areolae of inflammation, appearing over 

 the whole surface of the body. 



Pessimism [pes' '-im-izm) [pessimus, worst]. A mor- 

 bid disposition to put the worst construction upon 

 everything ; a symptom common among insane 

 people. Opposite of Optimism. 



Pessulus (pes'-u-lus) [naooaAoc, a peg, pin, gag: //. , 

 PessuW\. In biology, the cross-bone of the syrinx of 

 a bird; the "bolt- bar" or "bar of divarication" 

 across the lower end of the trachea where it divides 

 into the right and left bronchi. 



Pest [pestis, a pest]. A plague ; pestilence. P. -house, 

 a hospital for persons sick with pestilential diseases. 



Pesta (pes'-tah) [L.]. A pest. P. magna. Synonym 

 of Smallpox. 



Pestichia, Pesticia (pes-tik'-e-ah, pes-tis f -e-ah). Syn- 

 onyms of Petechia. 



Pestiduct (pes'-tid-ukt) [pestis, pest; ductus, convey- 

 ance]. A channel, or means of conveyance, for a 

 contagion ; fomites. [Rare.] 



Pestiferous (pes-tif-er-us) [pestis, pest ;ferre, to bear]. 

 Causing pestilence ; destructive. 



Pestilence (pes'- til - ens) [pestilentia]. Any deadly 

 epidemic disease or the prevalence of such a disease. 



Pestilent, Pestilential (pes'-til-ent, pes-til-en'-shal) 

 [pestis, plague]. Having the nature of a pestilence 

 or epidemic disease. P. Fever. Synonym of the 

 Plague, q.v. 



Pestilentia ( pes - til - en' - she - ah) . Synonym of the 

 Plague. 



Pestis (pes'-tis) [L.]. A plague. P. americana, 

 yellow fever. P. bubonica, P. inguinaria, P. 

 orientalis, the plague. P. variolosa. Synonym 

 of Variola. 



Pestle (pes' -I) [pistillum~\. The instrument with which 

 substances are rubbed in a mortar. 



Petal (pet'-al) [nhalMV, a leaf]. In biology: (a) 

 A leaf of a corolla, (b) The leaf-shaped ambulacrum 

 of an echinoderm. 



Petaled, Petalled (pet' -aid) [ixhalov, a leaf]. In 

 biology, having petals. 



Petaliform (pet'-al-iform) [Trha?.ov, a leaf; forma, 

 form]. In biology, shaped like a petal. 



Petaline (pet'-al-in) [petalum, a petal]. In biology, 

 pertaining or attached to a petal. 



Petalody (pet'-al-o-de) [■KfraXav, a leaf; ehfoc, shape], 

 In biology, the assumption of petal-like char; 

 by other parts of a flower. 



Petaloid (pet'-al-oid) [nha'kov, a leaf ; tWoc, shape]. 

 In biology, resembling a petal, either in color, tex- 

 ture or form. 



Petalomania (pet-al-o-ma'-ne-ah). Same as 



Petalous (pel'-al-us) [-iralov, a leaf]. In bi 

 furnished with petals ; petaled. 



Petasma (pet-az'-mah) [■Khaaua, a curtain]. In U 

 ology, a membranous development attached to the 

 first pair of pleopoda in the male of certain ci 

 ceans. (Bate.) 



Petechia (pe-te'-ke-ah) [It., peteche, a flea-bit< 

 Petechia']. A small, round, oval, or irregular s] 

 ecchymosis beneath the epidermis, varying in 

 from a flea-bite to an area having a diameter of hall an 

 inch or more. It is not raised above the level of the 



