Copy of `Dorland's Medical Dictionary`

The wordlist doesn't exist anymore, or, the website doesn't exist anymore. On this page you can find a copy of the original information. The information may have been taken offline because it is outdated.

Dorland's Medical Dictionary Category: Health and Medicine > Medical Dictionary Date & country: 31/12/2010, USA Words: 39128

pneumonocentesis
(noo-mo″no-sen-te´sis) paracentesis of a lung.

pneumonocyte
(noo-mon´o-sīt) alveolar cell.

pneumonopathy
(noo″mo-nop´ә-the) any lung disease; called also pneumonosis.

pneumonopexy
(noo-mo´no-pek″se) fixation of the lung to the thoracic wall.

pneumonorrhaphy
(noo″mo-nor´ә-fe) suture of the lung.

pneumonosis
(noo″mo-no´sis) pneumonopathy.

pneumonotomy
(noo″mo-not´ә-me) incision of the lung; called also pneumotomy.

pneumopericardium
(noo″mo-per″ĭ-kahr´de-әm) the presence of air or gas in the pericardial cavity.

pneumoperitoneum
(noo″mo-per″ĭ-to-ne´әm) the presence of air or gas in the peritoneal cavity, occurring pathologically or introduced intentionally.

pneumoperitonitis
(noo″mo-per″ĭ-to-ni´tis) peritonitis with accumulation of air or gas in the peritoneal cavity.

pneumopleuritis
(noo″mo-pldbobr-ri´tis) pleuropneumonia (def. 1).

pneumopyelography
(noo″mo-pi″ә-log´rә-fe) radiography after injection of oxygen or air into the renal pelvis.

pneumopyopericardium
(noo″mo-pi″o-per″ĭ-kahr´de-әm) air or gas and pus in the pericardium.

pneumopyothorax
(noo″mo-pi″o-thor´aks) pyopneumothorax.

pneumoradiography
(noo″mo-ra″de-og´rә-fe) radiography of a part after injection of oxygen or other gas as contrast material.

pneumoretroperitoneum
(noo″mo-ret″ro-per″ĭ-to-ne´әm) the presence of air or gas in the retroperitoneal space.

pneumorrhagia
(noo″mo-ra´jә) hemorrhage from the lungs; severe hemoptysis.

pneumotachograph
(noo″mo-tak´o-graf) an instrument for recording the velocity of respired air.

pneumotachometer
(noo″mo-tә-kom´ә-tәr) a transducer for measuring exhaled air flow.

pneumotaxic
(noo″mo-tak´sik) regulating the respiratory rate.

pneumotaxic center
a respiratory center in the upper pons that rhythmically inhibits inhalation.

pneumotherapy
(noo″mo-ther´ә-pe) treatment of disease of the lungs.

pneumothorax
(noo″mo-thor´aks) accumulation of air or gas in the pleural cavity, resulting in collapse of the lung on the affected side; it may occur spontaneously (spontaneous pneumothorax) or as a result of trauma (traumatic pneumothorax). Normally the pleural cavity is an airtight compartment with negative pressure. When air ente...

pneumotomy
(noo-mot´ә-me) pneumonotomy.

pneumoventriculography
(noo″mo-vәn-trik″u-log´rә-fe) pneumoencephalography.

Pneumovirus
(noo´mo-vi″rәs) the respiratory syncytial viruses, a genus of the family Paramyxoviridae that cause respiratory infections in humans and other animals.

PNH cells
abnormal erythrocytes seen in paroxysmal nocturnal hemoglobinuria (PNH); they are classified in three groups: PNH I cells, which have normal or nearly normal sensitivity to complement; PNH II cells, which require about one fourth as much complement as normal cells for an equal amount of lysis; and PNH III cells, which have about one ...

PO
abbreviation for Latin per os (by mouth, orally).

Po
polonium.

PO2
the partial pressure of OXYGEN in the blood; also written PO2, pO2, and pO2.

pock
(pok) a pustule, especially of smallpox.

pocket
(pok´әt) a bag or pouch; see also cavity, recess, and sac. infrabony pocket , intra-alveolar pocket , intrabony pocket a periodontal pocket in which the bottom is apical to the level of the adjacent alveolar bone. periodontal pocket&n...

pockmark
(pok´mahrk) a depressed scar left by a pustule.

podagra
(pә-dag´rә) gouty pain in the great toe.

podalgia
(pә-dal´jә) pain in the feet.

podalic
(pә-dal´ik) pertaining to or by means of the feet, as podalic version.

podalic version
conversion of a more unfavorable presentation into a footling presentation.

podarthritis
(pod″ahr-thri´tis) inflammation of the joints of the feet.

podencephalus
(pod″әn-sef´ә-lәs) a deformed fetus without a cranium, the brain hanging by a pedicle.

podiatric medicine
podiatry.

podiatrist
(po-di´ә-trist) chiropodist; a specialist in podiatry.

podiatry
(pә-di´ә-tre) the specialized field dealing with the study and care of the foot, including its anatomy, pathology, medical and surgical treatment, and other aspects. adj., podiat´ric., adj.

podocyte
(pod´o-sīt) an epithelial cell of the visceral layer of a renal glomerulus, having a number of footlike radiating processes (pedicles).

pododynamometer
(pod″o-di″nә-mom´ә-tәr) a device for determining the strength of the muscles of the lower limb.

pododynia
(pod″o-din´e-ә) neuralgic pain of the heel and sole; burning pain without redness in the sole of the foot.

podofilox
(po-dof´ĭ-loks) a corrosive preparation of podophyllotoxin that inhibits cell mitosis and is used for topical treatment of venereal warts.

podology
(po-dol´ә-je) podiatry.

podophyllin
(pod″o-fil´in) podophyllum resin.

podophyllotoxin
(pod″o-fil´o-tok″sin) a highly toxic compound that is the main active component of podophyllum resin and has cathartic and caustic properties. Some of its less toxic derivatives, such as etoposide and teniposide, are used as antineoplastic agents.

podophyllum
(pod″o-fil´әm) the dried rhizome and roots of Podophyllum peltatum. See also podophyllotoxin and podophyllum resin.

podophyllum resin
a mixture of resins from podophyllum, used as a topical caustic in treatment of laryngeal papillomas, condylomata acuminata, and other epitheliomas.

POEMS syndrome
a multisystem syndrome combining polyneuropathy, organomegaly, endocrinopathy, M component, and skin changes. It may be linked to a dysproteinemia such as the presence of unusual monoclonal proteins and light chains. Called also Crow-Fukase syndrome and PEP syndrome.

poetry therapy
a form of bibliotherapy in which a selected poem is used to evoke feelings and responses for discussion in a therapeutic setting. The poem may be a published work or one created by the patient, and poetic devices such as rhythm, image, and metaphor contribute to the therapeutic effect.

pogoniasis
(po″go-ni´ә-sis) excessive growth of the beard, or growth of a beard on a woman.

pogonion
(po-go´ne-on) the anterior midpoint of the chin.

poikiloblast
(poi´kĭ-lo-blast″) an abnormally shaped erythroblast.

poikilocyte
(poi´kĭ-lo-sīt″) an abnormally shaped red blood cell; there are many different types, such as the burr cell, sickle cell, target cell, acanthocyte, elliptocyte, schistocyte, spherocyte, and stomatocyte.

poikilocytosis
(poi″kĭ-lo-si-to´sis) the presence of poikilocytes in the blood.

poikiloderma
(poi″kĭ-lo-dur´mә) pigmentary and atrophic changes in the skin, giving it a mottled appearance.

poikilotherm
(poi-kil´o-therm″) an animal that exhibits poikilothermy; a cold-blooded animal. ectotherm.

poikilothermal
(poi″kĭ-lo-thur´mәl) poikilothermic.

poikilothermic
(poi″kĭ-lo-thur´mik) pertaining to or characterized by poikilothermy. ectothermic.

poikilothermy
(poi″kĭ-lo-thur´me) the state of having a body temperature that varies with that of the environment. the ability of organisms to adapt themselves to variations in the temperature of the environment. ectothermy.

point
(point) a small area or spot; the sharp end of an object. to approach the surface, like the pus of an abscess, at a definite spot or place. a tapered, pointed endodontic instrument used for exploring the depth of the root canal in root canal therapy; called also root canal point.

point A
subspinale.

point Ar
articulare.

point B
a radiographic, cephalometric landmark, determined on the lateral head film; it is the most posterior midline point in the concavity between the infradentale and pogonion.

point Ba
basion.

point Bo
Bolton point.

point mutation
a mutation resulting from a change in a single base pair in the DNA molecule.

point of Arrhigi
an electrode site in electrocardiography, 2 to 3 cm to the left of the seventh thoracic vertebra.

point of care
the location at which patient services are delivered.

point of convergence
the point at which the lines of sight cross. the point to which rays of light incline.

point of direction
see position (def. 2).

point of divergence
the conjugate focus from which the light proceeds.

point of election
that point at which any particular surgical operation is done by preference.

point of fixation
the point or object on which one's sight is fixed and through which the axis opticus passes. the point on the retina, usually the fovea, on which are focused the rays coming from an object directly regarded.

point of incidence
see refraction (def. 2).

point of maximal impulse
the point on the chest where the impulse of the left ventricle is sometimes felt or seen most strongly, normally in the fifth costal interspace inside the mammillary line.

point of regard
p. of fixation (def. 1).

point of reversal
in retinoscopy, the point at which there is neutralization of movement because the reflex motion is changing to the opposite direction.

point R
Broadbent registration point.

point Z
a point formed by a line perpendicular to the nasion-menton line through the anterior nasal spine.

pointing test
Bárány pointing test.

Poiseuille's law
(pwah-zwēz´) at a constant driving pressure the flow rate of liquid through a capillary tube is directly proportional to the fourth power of the radius of the tube and inversely proportional to the length and viscosity of the tube.

poison
(poi´zәn) a substance that, on ingestion, inhalation, absorption, application, injection, or development within the body, sometimes in just small amounts, may cause structural or functional disturbance. See also toxin and venom. adj., poi´sonous., adj. See also poisoning and names of individual poisons.

poison center
poison control center a telephone service with toxicology experts providing emergency treatment advice for all kinds of poisonings, 24 hours a day. Poison control centers also provide poison prevention information to the community and education about recognition and treatment of poison exposures for health care providers. By gat...

poison ivy
Rhus radicans, a common North American vine that causes allergic contact dermatitis. The poison contained in its leaves, roots, and berries is an oily substance called urushiol. A few people are immune, but in others, momentary or even indirect contact may cause itching and even painful rashes, blisters, and swelling, a conditi...

poison ivy dermatitis
poison oak dermatitispoison sumac dermatitis see Rhus dermatitis.

poison oak
either of two species of trees of the genus Rhus (western poison oak and eastern poison oak), which cause allergic reactions similar to that of poison ivy. See also Rhus dermatitis.

poison sumac
Rhus vernix, a North American tree that causes an allergic reaction similar to that of poison ivy. See also Rhus dermatitis.

poisoning
(poi´zәn-ing) the damaging physiologic effects resulting from exposure to a potentially toxic substance (see also poison). Such substances can enter the body by several routes: oral (medicines, household products, etc.); nasal (carbon monoxide, pesticides, etc.); through the eyes (household products and industrial chemi...

Poland syndrome
(po´lәnd) unilateral absence of the sternocostal head of the pectoralis major muscle and ipsilateral syndactyly; called also Poland anomaly.

polar anemia
an anemic condition that occurs during exposure to low temperature; it is initially microcytic but later becomes normocytic. Called also Arctic anemia.

polar bodies
the small cells consisting of a tiny bit of cytoplasm and a nucleus; they result from unequal division of the primary oocyte (first polar body) and, if fertilization occurs, of the secondary oocyte (second polar body). metachromatic granules located at one or both ends of a bacterial cell.

polar cataract
a type of capsular cataract, usually disk-shaped; those in anterior locations are more common, and those in posterior locations reduce visual acuity more often.

polar cells
polar bodies (def. 1).

polar frontal artery
origin, anterior cerebral artery; branches, none; distribution, frontal pole of cerebral hemisphere.

polar temporal artery
origin,middle cerebral artery; branches, none; distribution, temporal pole of cerebral hemisphere.

polar zone
the region immediately around an electrode applied to the body.