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mondofacto - Online Medical Dictionary Category: Health and Medicine > Medical Dictionary Date & country: 26/01/2008, UK Words: 116197

pachymeter
An instrument for measuring the thickness of any object, especially of thin objects such as a plate of bone or a membrane. ... Synonym: pachometer. ... Origin: pachy-+ G. Metron, measure ... (05 Mar 2000) ...

pachynema
Synonym for pachytene ... <cell biology> Classical term for the third stage of prophase I of meiosis, during which the homologous chromosomes are closely paired and crossing over takes place. ... (18 Nov 1997) ...

pachynsis
Any pathologic thickening. ... Origin: G. A thickening ... (05 Mar 2000) ...

pachyntic
Relating to pachynsis. ... (05 Mar 2000) ...

pachyonychia
Abnormal thickness of the fingernails or toenails. ... Origin: pachy-+ G. Onyx, nail ... (05 Mar 2000) ...

pachyonychia congenita
A syndrome of ectodermal dysplasia of abnormal thickness and elevation of nail plates with palmar and plantar hyperkeratosis; the tongue is whitish and glazed owing to papillary atrophy; autosomal dominant inheritance. ... Synonym: Jadassohn-Lewandowski syndrome. ... (05 Mar 2000) ...

pachyotia
Thickness and coarseness of the auricles of the ears. ... Origin: pachy-+ G. Ous, ear ... (05 Mar 2000) ...

pachyperiostitis
Proliferative thickening of the periosteum caused by inflammation. ... Origin: pachy-+ periostitis ... (05 Mar 2000) ...

pachyperitonitis
Inflammation of the peritoneum with thickening of the membrane. ... Synonym: productive peritonitis. ... Origin: pachy-+ peritonitis ... (05 Mar 2000) ...

pachypleuritis
Inflammation of the pleura with thickening of the membrane. ... Synonym: productive pleurisy. ... Origin: pachy-+ pleura + G. -itis, inflammation ... (05 Mar 2000) ...

pachypodous
Having large thick feet. ... Origin: pachy-+ G. Pous, foot ... (05 Mar 2000) ...

pachysalpingitis
Synonym for chronic interstitial salpingitis ... Salpingitis in which fibrosis or mononuclear cell infiltration involves all layers of the fallopian or eustachian tube. ... Synonym: pachysalpingitis. ... (05 Mar 2000) ...

pachysalpingo-ovaritis
Chronic parenchymatous inflammation of the ovary and fallopian tube. ... Origin: pachy-+ salpinx + Mod. L. Ovarium, ovary, + G. -itis, inflammation ... (05 Mar 2000) ...

pachysomia
Pathologic thickening of the soft parts of the body, notably in acromegaly. ... Origin: pachy-+ G. Soma, body ... (05 Mar 2000) ...

pachytene
<cell biology> Classical term for the third stage of prophase I of meiosis, during which the homologous chromosomes are closely paired and crossing over takes place. ... (18 Nov 1997) ...

pachyvaginalitis
Chronic inflammation with thickening of the tunica vaginalis testis. ... Origin: pachy-+ Mod. L. (tunica) vaginalis, + G. -itis, inflammation ... (05 Mar 2000) ...

pachyvaginitis
Chronic vaginitis with thickening and induration of the vaginal walls. ... Origin: pachy-+ vagina + G. -itis, inflammation ... (05 Mar 2000) ...

pachyvaginitis cystica
vaginitis emphysematosa ...

pacific islands
The islands of the pacific ocean divided into micronesia, melanesia, and polynesia (including new zealand). The collective name oceania includes the aforenamed islands, adding Australia, new zealand, and the malay archipelago (indonesia). ... (12 Dec 1998) ...

pacing catheter
A cardiac catheter with one or more electrodes at its tip which can be used to artificially pace the heart. ... (05 Mar 2000) ...

Pacini
Filippo, Italian anatomist, 1812-1883. ... See: pacinian corpuscles, Vater-Pacini corpuscles. ... (05 Mar 2000) ...

Pacini, Fillippo
<person> Was an Anatomist and Histologist. Appointed Professor of Anatomy and Physiology in Pisa and later (1849) in Florence. ... Pacini's Corpuscles, Bodies - end organs of sensory nerves - corpusculum lamellosum. They are sometimes known as Pacini-Vater corpuscles, having previously been described by Abraham Vater (q.v.) in 1741. ... Lived: …

pacinian corpuscles
Rapidly adapting mechanoreceptors found in subcutaneous tissue beneath both hairy and glabrous skin. Pacinian corpuscles contain an afferent nerve fibre surrounded by a capsule with multiple concentric layers. They have large receptive fields and are most sensitive to high-frequency stimuli, such as vibration. ... (12 Dec 1998) ...

pacinitis
Inflammation of the pacinian corpuscles. ... (05 Mar 2000) ...

pack
1. A bundle made up and prepared to be carried; especially, a bundle to be carried on the back; a load for an animal; a bale, as of goods. ... 2. [Cf. Peck] A number or quantity equal to the contents of a pack; hence, a multitude; a burden. 'A pack of sorrows.' 'A pack of blessings.' ... 'In England, by a pack of meal is meant 280 lbs.; of wool, 240 …

package insert
<pharmacology> A form containing the indications, side effects and other relevant information known about a drug that can be found on the inside of any prescription drug container. ... (09 Oct 1997) ...

packaging
<molecular biology, virology> Of a virus, the process by which the genetic material is encapsulated by the coat proteins. ... (18 Nov 1997) ...

packed cell volume
<haematology> Measurement of the proportion of the blood occupied by the red blood cells. Normal values are 40-54% in males, 35-47% in females. ... (13 Nov 1997) ...

packed human blood cells
Whole blood from which plasma has been removed; may be prepared any time during the dating period of the whole blood from which it is derived, but not later than six days after the blood has been drawn if separation of plasma and cell's is achieved by centrifugation. ... (05 Mar 2000) ...

packed red blood cell
<haematology> Red blood cells collected from one individual that are packed into a small volume for transfusion into a patient. ... (16 Dec 1997) ...

packer
1. An instrument for tamponing. ... Synonym: plugger. ... (05 Mar 2000) ...

packing
1. Filling a natural cavity, a wound, or a mold with some material. ... 2. The material so used. ... 3. The application of a pack. ... (05 Mar 2000) ...

packing process
The method of placing denture base material in a flask for processing. ... (05 Mar 2000) ...

paclitaxel
<drug> This alkaloid is an extract from the Pacific yew, Taxus brevifolia. ... It inhibits microtubule disassembly and is used as a chemotherapy agent to treat bladder, oesophageal and lung cancers and is being investigated as a treatment for leukaemia and lymphoma. ... (09 Oct 1997) ...

PACS
Acronym for picture archive and communication system, a computer network for digitised radiologic images and reports. ... (05 Mar 2000) ...

pactamycin
<drug> Antibiotic that inhibits translation by blocking the binding of initiator tRNA to the initiator complex. ... (18 Nov 1997) ...

pad
1. A soft, or small, cushion; a mass of anything soft; stuffing. ... 2. A kind of cushion for writing upon, or for blotting; especially, one formed of many flat sheets of writing paper, or layers of blotting paper; a block of paper. ... 3. A cushion used as a saddle without a tree or frame. ... 4. A stuffed guard or protection; especially, one worn on …

paddle
1. An implement with a broad blade, which is used without a fixed fulcrum in propelling and steering canoes and boats. ... 2. The broad part of a paddle, with which the stroke is made; hence, any short, broad blade, resembling that of a paddle. 'Thou shalt have a paddle upon thy weapon.' (Deut. Xxiii. 13) ... 3. One of the broad boards, or floats, at …

Padykula-Herman stain
<technique> For myosin ATPase, a technique similar to that of Gomori's non-specific alkaline phosphatase stain, except that incubation is carried out with ATP as the substrate at pH 9.4 in the absence of Mg++; enzyme activity is demonstrated as blackened deposits in the A band of striated muscle sarcomeres; control tissue sections lacking sub …

paean
1. An ancient Greek hymn in honor of Apollo as a healing deity, and, later, a song addressed to other deities. ... 2. Any loud and joyous song; a song of triumph. 'Public paeans of congratulation.' ... 3. See Paeon. ... Origin: L. Paean, Gr, fr. The physician of the gods, later, Apollo. Cf. Paeon, Peony ... Alternative forms: pean. ... Source: Websters …

paecilomyces
A deuteromycetous fungal genus occasionally causing human diseases such as pulmonary infections, mycotic keratitis, endocarditis, and opportunistic infections. ... (12 Dec 1998) ...

paeciloycosis
A systemic (mainly pulmonary) mycosis of humans and various lower animals caused by fungi of the genus Paecilomyces. ... (05 Mar 2000) ...

paediatric
1. Relating to the care and medical treatment of children, belonging to or concerned with paediatrics. ... 2. <study> The medical study of the diagnosis and treatment of diseases and disorders in children is called paediatrics. ... (10 Jan 1998) ...

paediatric arthritis
Arthritis is not just a problem for the retired. It can and does affect children in the form of paediatric arthritis. Also called juvenile arthritis. ... (12 Dec 1998) ...

paediatric assistants
Persons academically trained to provide medical care, under the supervision of a physician, to infants and children. ... (12 Dec 1998) ...

paediatric dentistry
The practice of dentistry concerned with the dental problems of children, proper maintenance, and treatment. The dental care may include the services provided by dental specialists. ... (12 Dec 1998) ...

paediatric nursing
The nursing care of children from birth to adolescence. It includes the clinical and psychological aspects of nursing care. ... (12 Dec 1998) ...

paediatric radiology
The clinical subspecialty concerned with the radiological manifestations of diseases of children. ... (05 Mar 2000) ...

paediatrician
<specialist> A medical doctor who treats children and infants. ... (10 Jan 1998) ...

paediatrics
Paediatrics is concerned with the health of infants, children and adolescents, their growth and development, and their opportunity to achieve full potential as adults. (r.e. Behrman in nelson's textbook of paediatrics) ... (12 Dec 1998) ...

paediatrist
Synonym for paediatrician ... <specialist> A medical doctor who treats children and infants. ... (10 Jan 1998) ...

paediatry
A rarely used term for paediatrics ... (05 Mar 2000) ...

PaeR7I invertase
<enzyme> A DNA-invertase-like enzyme from pseudomonas; has 45-49% amino acid sequence similarity to various DNA invertases; mw 21.5 kD; amino acid sequence given in first source ... Registry number: EC 2.7.7.- ... Synonym: paer7in gene product, paer7in ... (26 Jun 1999) ...

PAF
<abbreviation> Platelet-aggregating factor. ... (05 Mar 2000) ...

page
1. One side of a leaf of a book or manuscript. 'Such was the book from whose pages she sang.' (Longfellow) ... 2. A record; a writing; as, the page of history. ... 3. The type set up for printing a page. ... Origin: F, fr. L. Pagina; prob. Akin to pagere, pangere, to fasten, fix, make, the pages or leaves being fastened together. Cf. Pact, Pageant, Pa …

page kidney
<radiology> Renal compression most likely to be hypertension, mediated by renin-angiotensin system, aetiology: haematoma (posttraumatic) -- most common, cyst, tumour, on angio: stretching and splaying of intrarenal vessels ... (12 Dec 1998) ...

pageant
1. A theatrical exhibition; a spectacle. 'A pageant truly played.' 'To see sad pageants of men's miseries.' (Spenser) ... 2. An elaborate exhibition devised for the entertainmeut of a distinguished personage, or of the public; a show, spectacle, or display. 'The gaze of fools, and pageant of a day !' (Pope) 'We love the man, the paltry pageant you.' …

Pagenstecher, Alexander
<person> German ophthalmologist, 1828-1879. ... See: Pagenstecher's circle. ... (05 Mar 2000) ...

Pagenstecher's circle
In the case of a freely movable abdominal tumour, the mass is moved throughout its entire range, its position at intervals being marked on the abdominal wall; when these points are joined, a circle is formed, the centre of which marks the point of attachment of the tumour. ... (05 Mar 2000) ...

paget disease
<radiology> Disease of unknown aetiology involving destruction and reparation, age greater than 40y; M:F 2:1, skull, osteoporosis circumscripta (outer table destroyed only), cotton wool appearance, increased hat size!, spine, monostotic vertebral involvment usually, pelvis, affected in 2/3 cases, consists of cortical thickening, enlargement o …

paget disease of breast
<radiology> Form of ductal carcinoma, associated with eczematous changes of the nipple ... (12 Dec 1998) ...

Paget-Eccleston stain
<technique> An aldehyde-thionin-PAS-orange G staining technique modified to identify seven different cell types in the anterior pituitary gland. ... (05 Mar 2000) ...

Paget-von Schrotter syndrome
<syndrome> Stress thrombosis or spontaneous thrombosis of the subclavian or axillary vein; a thoracic-outlet syndrome. ... Synonym: effort-induced thrombosis. ... (05 Mar 2000) ...

Paget, Sir James
<person> English surgeon, 1814-1899. ... See: Paget's cells, Paget's disease, extramammary Paget disease, Paget-von Schrotter syndrome. ... (05 Mar 2000) ...

Paget's cells
Relatively large, neoplastic epithelial cell's (carcinoma cell's) with hyperchromatic nuclei and palely staining cytoplasm; in Paget's disease of the breast, such cell's occur in neoplastic epithelium in the ducts and in the epidermis of the nipple, areola, and adjacent skin. ... (05 Mar 2000) ...

Paget's disease
<disease, rheumatology> This is a disease of bone that initially results in the excessive resorption of bone (by osteoclasts) followed by the replacement of normal bone marrow with vascular and fibrous tissue. ... Many patients are asymptomatic and diagnosed by routine X-rays. ... (13 Nov 1997) ...

Paget's disease of the nipple
<oncology, tumour> A cancer of the nipple. ... (16 Dec 1997) ...

paget's disease, extramammary
A rare cutaneous neoplasm that occurs in the elderly. It develops more frequently in women and predominantly involves apocrine gland-bearing areas, especially the vulva, scrotum, and perianal areas. The lesions develop as erythematous scaly patches that progress to crusted, pruritic, erythematous plaques. The clinical differential diagnosis include …

paget's disease, mammary
An intraductal carcinoma of the breast extending to involve the nipple and areola, characterised clinically by eczema-like inflammatory skin changes and histologically by infiltration of the dermis by malignant cells (paget's cells). ... (12 Dec 1998) ...

pagetic
Relating to or suffering from Paget's disease. ... (05 Mar 2000) ...

pagetoid
Resembling or characteristic of Paget's disease. ... (05 Mar 2000) ...

pagetoid cells
Atypical melanocytes resembling Paget's cells, found in some cutaneous melanomas of the superficial spreading type. ... (05 Mar 2000) ...

pagetoid reticulosis
Synonym for Woringer-Kolopp disease ... A benign localised form of lymphoma with solitary or closely grouped cutaneous tumours consisting of predominantly epidermal infiltration of mononuclear cells resembling those found in mycosis fungoides. ... Synonym: pagetoid reticulosis. ... (05 Mar 2000) ...

pagoda cell
<biology> Ganglion cells, from the central nervous system of a leech, with a spontaneous firing pattern that can look a little like a pagoda on an oscilloscope. ... (18 Nov 1997) ...

pagophagia
Compulsive and repeated ingestion of ice; sometimes associated with iron deficiency anaemia. ... Origin: G. Pagos, frost, + phago, to eat ... (05 Mar 2000) ...

PAH
<abbreviation> P-aminohippuric acid. ... (05 Mar 2000) ...

PahA dioxygenase
<enzyme> Converts polycyclic aromatic hydrocarbons (pah) to the corresponding cis-dihydrodiol in the pah degradation pathway of pseudomonas putida; genbank d16629 ... Registry number: EC 1.13.11.- ... Synonym: paha gene product ... (26 Jun 1999) ...

Pahvant Valley fever
Synonym for tularaemia ... <infectious disease, microbiology> A rare infection of rabbits and rodents caused by the bacteria Francisella tularensis. ... Francisella tularensis is found in many animals (rabbits, rodents) and may be transmitted by direct contact or via insect bite (ticks and deer-fly). Humans can also contract the illness via the …

Pahvant Valley plague
Synonym for tularaemia ... <infectious disease, microbiology> A rare infection of rabbits and rodents caused by the bacteria Francisella tularensis. ... Francisella tularensis is found in many animals (rabbits, rodents) and may be transmitted by direct contact or via insect bite (ticks and deer-fly). Humans can also contract the illness via the …

paidology
Synonym for pedology ... A rarely used term for the branch of biology and of sociology concerned with the child in his physical, mental, and social development. ... Synonym: paidology. ... Origin: G. Pais (paid-), child, + logos, study ... (05 Mar 2000) ...

pail
A vessel of wood or tin, etc, usually cylindrical and having a bail, used especially. For carrying liquids, as water or milk, etc.; a bucket. It may, or may not, have a cover. ... Origin: OE. Paile, AS. Paegel a wine vessel, a pail, akin to D. & G. Pegel a watermark, a gauge rod, a measure of wine, Dan. Paegel half a pint. ... Source: Websters Di …

pain
<symptom> An unpleasant sensory and emotional experience associated with actual or potential tissue damage or described in terms of such damage. ... (16 Dec 1997) ...

pain clinics
Facilities providing diagnostic, therapeutic, and palliative services for patients with severe chronic pain. These may be free-standing clinics or hospital-based and serve ambulatory or inpatient populations. The approach is usually multidisciplinary. These clinics are often referred to as 'acute pain services'. ... (12 Dec 1998) ...

pain insensitivity, congenital
Absence of sensibility to pain or inability to feel pain. The condition is present at birth. ... (12 Dec 1998) ...

pain measurement
Scales, questionnaires, tests, and other methods used to assess pain severity and duration in patients or experimental animals to aid in diagnosis, therapy, and physiological studies. ... (12 Dec 1998) ...

pain reaction
Dilation of the pupil or any other involuntary act occurring in response to a stimulus causing sharp pain anywhere. ... (05 Mar 2000) ...

pain threshold
Amount of stimulation required before the sensation of pain is experienced. ... (12 Dec 1998) ...

pain tolerance
The greatest intensity of painful stimulation that an individual is able to tolerate. ... (05 Mar 2000) ...

pain-pleasure principle
A psychoanalytic concept that, in a human's psychic functioning, he/she tends to seek pleasure and avoid pain; a term borrowed by experimental psychology to denote the same tendency of an animal in a learning situation. ... Synonym: pleasure principle. ... (05 Mar 2000) ...

pain, ankle
The ankle is a hinged joint. The severity of ankle sprains ranges from mild (which can resolve within 24 hours) to severe (which can require surgical repair). Tendinitis of the ankle can be caused by trauma or inflammatory arthritis. ... (12 Dec 1998) ...

pain, back
Symptoms in the low back can relate to the bony lumbar spine, discs between the vertebrae, ligaments around the spine and discs, spinal cord and nerves, muscles of the low back, internal organs of the pelvis and abdomen, and the skin covering the lumbar area. ... (12 Dec 1998) ...

pain, chest
Chest pain has many cause. One celebrated cause is angina which results from inadequate oxygen supply to the heart muscle due to coronary artery disease or spasm of the coronary arteries. Treatment of angina includes rest, medication, angioplasty, and/or coronary artery bypass surgery. ... (12 Dec 1998) ...

pain, elbow
Tendinitis can affect the inner or outer elbow. Treatment includes ice, rest, and medication for inflammation. Bacteria can infect the skin of a scraped (abraded) elbow and cause pain. ... (12 Dec 1998) ...

pain, intractable
Pain which is difficult to control. ... (12 Dec 1998) ...

pain, knee
Causes of knee pain include injury, degeneration, arthritis, infrequently infection and rarely bone tumours. ... (12 Dec 1998) ...

pain, postoperative
Pain during the period after surgery. ... (12 Dec 1998) ...

painful
1. Full of pain; causing uneasiness or distress, either physical or mental; afflictive; disquieting; distressing ... 2. Requiring labour or toil; difficult; executed with laborious effort; as a painful service; a painful march. ... 3. Painstaking; careful; industrious. 'A very painful person, and a great clerk.' (Jer. Taylor) 'Nor must the painful hu …

painful anaesthesia
Synonym for anaesthesia dolorosa ... Severe spontaneous pain occurring in an anaesthetic area. ... Synonym: painful anaesthesia. ... (05 Mar 2000) ...

painful haematuria
Haematuria associated with dysuria, usually indicating the coexistence of infection, trauma, calculi, or foreign bodies within the lower urinary tract. ... (05 Mar 2000) ...

painful paraplegia
Synonym for paraplegia dolorosa ... Paralysis of the lower extremities in which the affected parts, in spite of loss of motion and sensation, are the seat of excruciating pain; occurs in certain cases of cancer of the spinal cord. ... Synonym: painful paraplegia. ... (05 Mar 2000) ...