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Medical Dictionary - Dictionary of Medicine and Human Biology


Medical Dictionary


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pneumoperitoneum (noo′mo-per-i-to-ne′um)
Presence of air or gas in the peritoneal cavity as a result of disease, or produced artificially in the abdomen to achieve exposure during laporoscopic surgery. [G. pneuma, air, + peritoneum]

pneumoperitonitis (noo′mo-per-i-to-ni′tis)
Inflammation of the peritoneum with an accumulation of gas in the peritoneal cavity. [G. pneuma, air, + peritonitis]

pneumopexy (noo′mo-pek-se)
SYN: pneumonopexy.

pneumophagia (noo-mo-fa′je-a)
SYN: aerophagia.

pneumopleuritis (noo′mo-ploo-ri′tis)
Pleurisy with air or gas in the pleural cavity. [G. pneuma, air, + pleur- + -itis, inflammation]

pneumopyelography (noo′mo-pi-e-log′ra-fe)
Radiography of the kidney after air or gas has been injected into the renal pelvis. [G. pneuma, air, + pyelos, pelvis, + grapho, to write]

pneumoradiography (nu′mo-ra-di-og′ra-fi)
SYN: pneumography (2) .

pneumoresection (noo′mo-re-sek′shun)
Excision of part of a lung. [G. pneumon, lung, + resection]

pneumoretroperitoneum (noo′mo-ret′ro-per-i-to-ne′um)
Pathologic presence of air in the retroperitoneal tissues.

pneumoroentgenography (noo′mo-rent′ge-nog′ra-fe)
SYN: pneumography (2) .

pneumorrhachis (noo-mo-ra′kis, noo-mor′a-kis)
The presence of gas in the spinal canal. SYN: pneumatorrhachis. [G. pneuma, air, + rhachis, spinal column]

pneumoscope (noo′mo-skop)
SYN: pneumatoscope.

pneumoserothorax (noo′mo-ser-o-thor′aks)
SYN: hydropneumothorax.

pneumosilicosis (noo′mo-sil′i-ko′sis)
SYN: silicosis.

pneumotachogram (noo-mo-tak′o-gram)
A recording of respired gas flow as a function of time, produced by a pneumotachograph. [G. pneuma, air, + tachys, swift, + gramma, something written]

pneumotachograph (noo-mo-tak′o-graf)
An instrument for measuring the instantaneous flow of respiratory gases. SYN: pneumotachometer. Fleisch p. a p. that measures flow in terms of the proportional pressure drop across a resistance consisting of numerous capillary tubes in parallel. Silverman-Lilly p. a p. that measures flow in terms of the proportional pressure drop across a resistance consisting of a very fine mesh screen.

pneumotachometer (noo′mo-ta-kom′e-ter)
SYN: pneumotachograph. [G. pneuma, air, + tachys, swift, + metron, measure]

pneumothermomassage (noo-mo-ther′mo-ma-sahzh′)
Application to the body of hot air under varying degrees of pressure. [G. pneuma, air, + therme, heat, + Fr. massage]

pneumothorax (noo-mo-thor′aks)
The presence of free air or gas in the pleural cavity. [G. pneuma, air, + thorax] artificial p. p. produced by the injection of air, or a more slowly absorbed gas such as nitrogen, into the pleural space; formerly used for collapse therapy of tuberculosis. SYN: therapeutic p.. catamenial p. p. occurring in young women during menstruation, usually on the right side. extrapleural p. the presence of a gas between the endothoracic fascia-pleural layer and the adjacent chest wall. iatrogenic p. p. caused by a medical procedure, most often central venous catheter insertion, thoracentesis, or transbronchial and transthoracic lung biopsy. open p. a free communication between the atmosphere and the pleural space either via the lung or through the chest wall. SYN: sucking chest wound. pressure p. SYN: tension p.. p. simplex p., without known cause, in an otherwise healthy person. spontaneous p. p. occurring without iatrogenic or other trauma; primary spontaneous p. generally occurs in young people with apical blebs but otherwise normal lungs; secondary spontaneous p. occurs in people with underlying lung disease, most commonly chronic obstructive pulmonary disease and, less often, interstitial lung disease, pneumonia, lung abscess, and lung tumors. tension p. a p. in which air enters the pleural cavity and is trapped during expiration; intrathoracic pressure builds to levels higher than atmospheric pressure, compresses the lung, and may displace the mediastinum and its structures toward the opposite side, with consequent cardiopulmonary impairment. SYN: pressure p.. therapeutic p. SYN: artificial p.. traumatic p. p. caused by blunt or penetrating chest injury.

pneumotomy (noo-mot′o-me)
SYN: pneumonotomy.

pneumoventricle (noo-mo-ven′tri-kl)
Air in the ventricular system of the brain; occurs as a complication of a fracture of the skull that passes through the accessory nasal sinuses.

Pneumovirus (noo′mo-vi′rus)
A genus of viruses (family Paramyxoviridae) including respiratory syncytial virus, which causes severe lower respiratory tract disease in infants. Nucleocapsids are 13–15 nm in diameter and thus intermediate in size between other Paramyxoviridae and the Orthomyxoviridae; cytoplasmic inclusions are considerably more dense than those of other viruses in the family.

pneusis (noo′sis)
SYN: breathing. [G. pneo, to breathe]

pnigophobia (ni-go-fo′be-a)
Morbid fear of choking. [G. pnigos, choking, + phobos, fear]

PNMT
Abbreviation for phenylethanolamine N-methyltransferase.

PNP
Abbreviation for psychogenic nocturnal polydipsia.

PNPB
Abbreviation for positive-negative pressure breathing.

PO
Abbreviation for per os.

Po
Symbol for polonium.

pock (pok)
The specific pustular cutaneous lesion of smallpox. [A.S. poc, a pustule]

pocket (pok′et)
1. A cul-de-sac or pouchlike cavity. 2. A diseased gingival attachment; a space between the inflamed gum and the surface of a tooth, limited apically by an epithelial attachment. 3. To enclose within a confined space, as the stump of the pedicle of an ovarian or other abdominal tumor between the lips of the external wound. 4. A collection of pus in a nearly closed sac. 5. To approach the surface at a localized spot, as with the thinned-out wall of an abscess that is about to rupture. [Fr. pochette] gingival p. a diseased gingival attachment in which the increased depth of the sulcus is due to an increase in the bulk of its gingival wall. infrabony p., intrabony p. SYN: subcrestal p.. periodontal p. a pathologic deepening of the gingival sulcus resulting from detachment of the gingiva from the tooth. Rathke p. SYN: pituitary diverticulum. retraction pockets small areas of retraction of the tympanic membrane due to chronic negative pressure in the middle ear that can lead to formation of cholesteatoma. rheumatoid p. SYN: susceptibility cassette. Seessel p. the part of the embryonic foregut extending cephalad to the level of the oral plate and caudal to the pituitary diverticulum (Rathke pouch). SYN: preoral gut. subcrestal p. a p. extending apically below the level of the adjacent alveolar crest. SYN: infrabony p., intrabony p.. Tröltsch pockets SYN: anterior recess of tympanic membrane, posterior recess of tympanic membrane.

pockmark (pok′mark)
The small depressed scar left after the healing of the smallpox pustule.

poculum (pok′u-lum)
SYN: cup (1) . [L.] p. diogenis SYN: cup of palm.

pod-, podo-
Foot, foot-shaped. Cf.:ped-. [G. pous, podos]

podagra (po-dag′ra)
Severe pain in the foot, especially that of typical gout in the great toe. [G. fr. pous, foot, + agra, a seizure]

podagral, podagric, podagrous (pod′a-gral, po-dag′rik, pod′a-grus)
Relating to or characterized by podagra.

podalgia (po-dal′je-a)
Pain in the foot. SYN: pododynia, tarsalgia. [pod- + G. algos, pain]

podalic (po-dal′ik)
Relating to the foot. [G. pous (pod-), foot]

podarthritis (pod-ar-thri′tis)
Inflammation of any of the tarsal or metatarsal joints. [pod- + arthritis]

podedema (pod-e-de′ma)
Edema of the feet and ankles.

podiatric (po-di′a-trik)
Relating to podiatry.

podiatrist (po-di′a-trist)
A practitioner of podiatry. SYN: chiropodist, podologist. [pod- + G. iatros, physician]

podiatry (po-di′a-tre)
The specialty concerned with the diagnosis and/or medical, surgical, mechanical, physical, and adjunctive treatment of the diseases, injuries, and defects of the human foot. SYN: chiropody, podiatric medicine, podology. [pod- + G. iatreia, medical treatment]

podismus (po-diz′mus)
SYN: podospasm.

poditis (po-di′tis)
An inflammatory disorder of the foot. [pod- + G. -itis, inflammation] tourniquet p. postischemic acute inflammatory edema in the foot (or paw), as the result of complete obstruction of the circulation to that member by use of a tourniquet; produced experimentally in animals as a means of evaluating the anti-inflammatory efficacy of drugs.

podo-
See pod-.

podobromidrosis (pod′o-bro-mi-dro′sis)
Foul-smelling perspiration of the feet. [podo- + G. bromos, a foul smell, + hidros, sweat]

podocyte (pod′o-sit)
An epithelial cell of the visceral layer of Bowman capsule in the renal corpuscle, attached to the outer surface of the glomerular capillary basement membrane by cytoplasmic foot processes (pedicels); believed to play a role in the ultrafiltration of blood. [podo- + G. kytos, a hollow (cell)]

pododynamometer (pod′o-di′na-mom′e-ter)
An instrument for measuring the strength of the muscles of the foot or leg. [podo- + G. dynamis, force, + metron, measure]

pododynia (pod-o-din′e-a)
SYN: podalgia. [podo- + G. odyne, pain]

podofilox (po-dof′il-oks)
An antimitotic agent derived from species of Juniperus and Podophyllum; used to treat external genital and perianal warts.

podogram (pod′o-gram)
An imprint of the sole of the foot, showing the contour and the condition of the arch, or an outline tracing. [podo- + G. gramma, written]

podograph (pod′o-graf)
A device for taking an outline at the foot and an imprint of the sole. [podo- + G. grapho, to write]

podolite (pod′o-lit)
SYN: dahllite.

podologist (po-dol′o-jist)
SYN: podiatrist.

podology (po-dol′o-je)
SYN: podiatry. [podo- + G. logos, study]

podomechanotherapy (pod-o-mek′a-no-thar′a-pe)
Treatment of foot conditions with mechanical devices; e.g., arch supports, orthoses.

podometer (po-dom′e-ter)
SYN: pedometer. [podo- + G. metron, measure]

podophyllin (pod-o-fil′in)
SYN: podophyllum resin.

podophyllotoxin (pod′o-fil-o-tok′sin)
A toxic polycyclic substance, C22H22O8, with cathartic properties present in podophyllum; has antineoplastic action.

podophyllum (pod-o-fil′um)
The rhizome of P. peltatum (family Berberidaceae), used as a powerful laxative. SYN: May apple, vegetable calomel. Indian p. the dried rhizome and roots of P. emodi, a Himalayan plant; a cholagogue and cathartic.

podospasm, podospasmus (pod′o-spazm, -spaz-mus)
Spasm of the foot. SYN: podismus. [podo- + G. spasmos, spasm]

Podoviridae (po-do-vir′i-de)
Name for a family of bacterial viruses with short tails and genomes of double-stranded DNA (MW 12–73 × 106); heads may be isometric or elongated. The family includes the T-7 phage group and probably other genera.

POEMS
Acronym for polyneuropathy, organomegaly, endocrinopathy, monoclonal gammopathy, and skin changes. See P. syndrome. SYN: Crow-Fukase syndrome.

pogoniasis (po-go-ni′a-sis)
A rarely used term for the growth of a beard on a woman, or excessive hairiness of the face in men. SEE ALSO: hirsutism. [G. pogon, beard, + -iasis, condition]

pogonion (po-go′ni-on)
In craniometry, the most anterior point on the mandible in the midline; the most anterior, prominent point on the chin. SYN: mental point. [G. dim. of pogon, beard]

Pogonomyrmex (po-go′no-mir′meks, -mer′meks)
A genus of ants that attack humans and small animals. SYN: harvester ant. [G. pogon, beard, + myrmex, ant]

pOH
The negative decadic logarithm of the OH− concentration (in moles per liter).

-poiesis
Production; producing. [G. poiesis, a making]

poietin
Suffix used with words to indicate an agent with a stimulatory effect on growth or multiplication of cells, such as erythropoietin, and others. [G. poietes, maker, + -in]

poikilo-
Irregular, varied. [G. poikilos, many colored, varied]

poikiloblast (poy′ki-lo-blast)
A nucleated red blood cell of irregular shape. [poikilo- + G. blastos, germ]




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