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

Peters' ovum
An ovum with a presumptive fertilization age of about 13 days; for many years, it was one of very few young human embryos recovered in good condition and its study furnished many facts regarding early embryonic changes. ... (05 Mar 2000) ...

Petersen, C
<person> German surgeon, 1845-1908. ... See: Petersen's bag. ... (05 Mar 2000) ...

Petersen's bag
An obsolete device consisting of a rubber bag introduced into the rectum and inflated to push up the bladder to facilitate suprapubic cystotomy. ... (05 Mar 2000) ...

pethidine
Synonym for meperidine hydrochloride ... Ethyl 1-methyl-4-phenylisonipecotate hydrochloride;a widely used narcotic analgesic. ... Synonym: pethidine. ... (05 Mar 2000) ...

petiolate
Having a stem or pedicle. ... Synonym: petioled. ... Origin: L. Petiolus ... (05 Mar 2000) ...

petiole
The stalk portion of a leaf. ... (09 Oct 1997) ...

petioled
Synonym for petiolate ... Having a stem or pedicle. ... Synonym: petioled. ... Origin: L. Petiolus ... (05 Mar 2000) ...

petiolule
The stalk portion of a leaflet. ... (09 Oct 1997) ...

petiolus
A stem or pedicle. ... Synonym: petiole. ... Origin: L. Dim. Of pes (foot), the stalk of a fruit ... (05 Mar 2000) ...

petiolus epiglottidis
Synonym for stalk of epiglottis ... The lower end or pedicle of the cartilage of the epiglottis, attached to the superior notch of the thyroid cartilage. ... Synonym: petiolus epiglottidis. ... (05 Mar 2000) ...

petit mal
<neurology> A type of seizure (absence seizures) that in contrast to the grand mal seizure, are noted for their brevity and for the degree of loss of awareness (brief staring spell) accompanied by minimal motor manifestations. A common form of childhood epilepsy. ... (06 Oct 1997) ...

petit mal epilepsy
Synonym for childhood absence epilepsy ... A generalised epilepsy syndrome characterised by the onset of absence seizures in childhood, typically at age six or seven years. There is a strong genetic predisposition and girls are affected more often than boys. EEG reveals generalised 3 Hz spike-wave activity on a normal background. Prognosis for remis …

petit mal seizure
An absence seizure. ... (05 Mar 2000) ...

Petit, Alexis
<person> French physicist, 1791-1820. ... See: Dulong-Petit law. ... (05 Mar 2000) ...

Petit, Antoine
<person> French surgeon and anatomist, 1718-1794. ... See: Petit's ligament. ... (05 Mar 2000) ...

Petit, Francois du
<person> French surgeon and anatomist, 1664-1741. ... See: Petit's canals, Petit's sinus. ... (05 Mar 2000) ...

Petit, Jean
<person> Paris surgeon, 1674-1750. ... See: Petit's hernia, Petit's herniotomy, Petit's lumbar triangle. ... (05 Mar 2000) ...

Petit, Paul
<person> French anatomist, *1889. ... See: Petit's aponeurosis. ... (05 Mar 2000) ...

Petit's aponeurosis
The posterior layer of the broad ligament of the uterus. ... Origin: P. Petit ... (05 Mar 2000) ...

Petit's canals
Synonym for zonular spaces ... The spaces between the fibres of the ciliary zonule at the equator of the lens of the eye. ... Synonym: spatia zonularia, Petit's canals. ... (05 Mar 2000) ...

Petit's hernia
Lumbar hernia, occurring in Petit's triangle. ... (05 Mar 2000) ...

Petit's ligament
Synonym for sacrouterine fold ... A fold of peritoneum, containing the rectouterine muscle, passing from the sacrum to the base of the broad ligament on either side, forming the lateral boundary of the rectouterine (Douglas') pouch. ... Synonym: plica rectouterina, Douglas' fold, Jarjavay's ligament, Petit's ligament, rectouterine fold, uterosacral l …

Petit's lumbar triangle
Synonym for lumbar triangle ... An area in the posterior abdominal wall bounded by the edges of the latissimus dorsi and external oblique muscles and the iliac crest; herniations occasionally occur here. ... Synonym: trigonum lumbale, Petit's lumbar triangle. ... (05 Mar 2000) ...

Petit's sinus
Synonym for aortic sinus ... The space between the superior aspect of each cusp of the aortic valve and the dilated portion of the wall of the ascending aorta, immediately above each cusp. ... Synonym: sinus aortae, Petit's sinus, Valsalva's sinus. ... Arlt's sinus, an inconstant depression on the lower portion of the internal surface of the lacrimal …

petite mutant
<molecular biology, organism> A class of yeast mutants, most studied in Saccharomyces cerevisiae. Mutants grow slowly and rely on anaerobic respiration: mitochondria, although present, have reduced cristae and are functionally defective (termed promitochondria). There are three types of petite mutant: ... (i) Segregational mutants that show Me …

petrel
<ornithology> Any one of numerous species of longwinged sea birds belonging to the family Procellaridae. The small petrels, or Mother Carey's chickens, belong to Oceanites, Oceanodroma, Procellaria, and several allied genera. Diving petrel, any bird of the genus Pelecanoides. They chiefly inhabit the southern hemisphere. Fulmar petrel, Giant …

Petri dish
A small, shallow, circular dish made of thin glass or clear plastic with a loosely fitting, overlapping cover used especially in microbiology for the cultivation of microorganisms on solid media; it is frequently referred to as a plate. ... (05 Mar 2000) ...

Petri, Julius
<person> German bacteriologist, 1852-1921. ... See: Petri dish. ... (05 Mar 2000) ...

petrifaction
Fossilization, as in conversion into stone. ... Origin: L. Petra, rock + facio, to make ... (05 Mar 2000) ...

petrify
1. To convert, as any animal or vegetable matter, into stone or stony substance. 'A river that petrifies any sort of wood or leaves.' (Kirwan) ... 2. To make callous or obdurate; to stupefy; to paralyze; to transform; as by petrifaction; as, to petrify the heart. Young. 'Petrifying accuracy.' 'And petrify a genius to a dunce.' (Pope) 'The poor, petr …

petrissage
A manipulation in massage, consisting in a kneading of the muscles. ... Origin: Fr. Kneading ... (05 Mar 2000) ...

petro-
<prefix> A combining form from Gr. A rock, a stone; as, petrology, petroglyphic. ... (29 Oct 1998) ...

petro-occipital
Denoting the cranial suture between the occipital bone and the petrous portion of the temporal. ... Synonym: petroccipital. ... (05 Mar 2000) ...

petro-occipital fissure
A fissure between the petrous part of the temporal bone and the basilar part of the occipital bone that extends anteromedially from the jugular foramen; includes the jugular foramem (at its posterior end). ... Synonym: fissura petro-occipitalis, Ecker's fissure. ... (05 Mar 2000) ...

petro-occipital joint
Fibrocartilage filling the petro-occipital fissure. ... Synonym: synchondrosis petro-occipitalis. ... (05 Mar 2000) ...

petroccipital
Synonym for petro-occipital ... Denoting the cranial suture between the occipital bone and the petrous portion of the temporal. ... Synonym: petroccipital. ... (05 Mar 2000) ...

petrolatum
<pharmacology> A semisolid unctuous substance, neutral, and without taste or odour, derived from petroleum by distilling off the lighter portions and purifying the residue. It is a yellowish, fatlike mass, transparent in thin layers, and somewhat fluorescent. It is used as a bland protective dressing, and as a substitute for fatty materials i …

petroleum
Rock oil, mineral oil, or natural oil, a dark brown or greenish inflammable liquid, which, at certain points, exists in the upper strata of the earth, from whence it is pumped, or forced by pressure of the gas attending it. It consists of a complex mixture of various hydrocarbons, largely of the methane series, but may vary much in appearance, comp …

petroleum ether
petroleum benzin ...

petroleum jelly
Synonym for petrolatum ... <pharmacology> A semisolid unctuous substance, neutral, and without taste or odour, derived from petroleum by distilling off the lighter portions and purifying the residue. It is a yellowish, fatlike mass, transparent in thin layers, and somewhat fluorescent. It is used as a bland protective dressing, and as a substi …

petrology
1. <study> The department of science which is concerned with the mineralogical and chemical composition of rocks, and with their classification: lithology. ... 2. A treatise on petrology. ... (04 Mar 1998) ...

Petromyzon
Primitive marine vertebrate (Class Agnatha) with eel like body and lacking true jaws. Their relatively simple nervous system has been studied in some detail. ... (18 Nov 1997) ...

petropharyngeus
See: musculus petropharyngeus. ... (05 Mar 2000) ...

petrosa
The petrous portion of the temporal bone. ... Origin: L. Fr. Petra, rock ... (05 Mar 2000) ...

petrosal
<anatomy> Hard; stony; petrous; as, the petrosal bone; petrosal part of the temporal bone. ... Of, pertaining to, or in the region of, the petrous, or petrosal, bone, or the corresponding part of the temporal bone. ... <anatomy> Petrosal bone, a bone corresponding to the petrous portion of the temporal bone of man; or one forming more or …

petrosal bone
Synonym for petrous part of temporal bone ... The part of the temporal bone that contains the structures of the inner ear and the second part of the internal carotid artery; in antenatal life it appears as a separate ossification centre. ... Synonym: pars petrosa ossis temporalis, periotic bone, petrosal bone, petrous pyramid. ... (05 Mar 2000) ...

petrosal foramen
An occasional opening in the greater wing of the sphenoid bone, between the foramen spinosum and foramen ovale, which transmits the lesser petrosal nerve. ... Synonym: foramen petrosum, canaliculus innominatus, foramen of Arnold. ... (05 Mar 2000) ...

petrosal fossa
Synonym for petrosal fossula ... A small and often only faintly marked depression on the inferior surface of the petrous portion of the temporal bone, between the jugular fossa and the opening of the carotid canal; here opens the canaliculus tympanicus transmitting the tympanic nerve. ... Synonym: fossula petrosa, petrosal fossa, receptaculum ganglii …

petrosal fossula
A small and often only faintly marked depression on the inferior surface of the petrous portion of the temporal bone, between the jugular fossa and the opening of the carotid canal; here opens the canaliculus tympanicus transmitting the tympanic nerve. ... Synonym: fossula petrosa, petrosal fossa, receptaculum ganglii petrosi. ... (05 Mar 2000) ...

petrosal impression of the pallium
A shallow impression on the inferior surface of the cerebral hemisphere made by the superior margin of the petrous part of the temporal bone. ... Synonym: impressio petrosa pallii. ... (05 Mar 2000) ...

petrosal sinus
See: inferior petrosal sinus, superior petrosal sinus. ... (05 Mar 2000) ...

petrosal sinus sampling
Sampling of blood levels of the adrenocorticotropic hormone (acth) by withdrawal of blood from the inferior petrosal sinus. The inferior petrosal sinus arises from the cavernous sinus and runs to the internal jugular vein. Sampling of blood at this level is a valuable tool in the differential diagnosis of cushing disease, cushing syndrome, and othe …

petrosal vein
<anatomy, vein> A short trunk formed by the union of four or five cerebellar and pontine veins opposite the middle cerebellar peduncle; it terminates in the superior petrosal sinus. ... See: superior petrosal sinus, inferior petrosal sinus. ... Synonym: vena petrosa. ... (05 Mar 2000) ...

petrosalpingostaphylinus
An obsolete term for the levator veli palatini muscle. ... Origin: petrosa + G. Salpinx, trumpet, + staphyle, uvula ... (05 Mar 2000) ...

petrositis
An inflammation involving the petrous portion of the temporal bone and its air cells. ... Synonym: petrousitis. ... (05 Mar 2000) ...

petrosphenoid
Relating to the petrous portion of the temporal bone and to the sphenoid bone. ... (05 Mar 2000) ...

petrosphenoidal syndrome
<syndrome> Neoplastic infiltration of the apex of the petrous bone and the anterior part of the foramen lacerum. ... (05 Mar 2000) ...

petrosquamosal
Petrosquamous ... Relating to the petrous and the squamous portions of the temporal bone. ... Synonym: squamopetrosal. ... (05 Mar 2000) ...

petrosquamous fissure
A shallow fissure indicating externally the line of fusion of the petrous and squamous portions of the temporal bone. ... Synonym: fissura petrosquamosa. ... (05 Mar 2000) ...

petrostaphylinus
An obsolete term for the levator veli palatini muscle. ... Origin: G. Petra, stone, + staphyle, uvula ... (05 Mar 2000) ...

petrotympanic fissure
A fissure between the tympanic and petrous portions of the temporal bone; it transmits the chorda tympani nerve through a small patent portion, the anterior canaliculus of the chorda tympani. ... Synonym: fissura petrotympanica, glaserian fissure. ... (05 Mar 2000) ...

petrous bone
Synonym for petrous part of internal carotid artery ... <anatomy, artery> The part of the internal carotid artery in the carotid canal; its branches are carotidotympanic arteries and the artery of the pterygoid canal. ... Synonym: pars petrosa arteriae carotidis internae, petrous bone. ... (05 Mar 2000) ...

petrous ganglion
Synonym for inferior ganglion of glossopharyngeal nerve ... <anatomy, nerve> The lower of two sensory ganglion's on the glossopharyngeal nerve as it traverses the jugular foramen. ... Synonym: ganglion inferius nervi glossopharyngei, Andersch's ganglion, extracranial ganglia, ganglion extracraniale, petrosal ganglion, petrous ganglion. ... (05 M …

petrous part of temporal bone
The part of the temporal bone that contains the structures of the inner ear and the second part of the internal carotid artery; in antenatal life it appears as a separate ossification centre. ... Synonym: pars petrosa ossis temporalis, periotic bone, petrosal bone, petrous pyramid. ... (05 Mar 2000) ...

petrous pyramid
Synonym for petrous part of temporal bone ... The part of the temporal bone that contains the structures of the inner ear and the second part of the internal carotid artery; in antenatal life it appears as a separate ossification centre. ... Synonym: pars petrosa ossis temporalis, periotic bone, petrosal bone, petrous pyramid. ... (05 Mar 2000) ...

petrousitis
Synonym for petrositis ... An inflammation involving the petrous portion of the temporal bone and its air cells. ... Synonym: petrousitis. ... (05 Mar 2000) ...

Pette-Doring disease
nodular panencephalitis ...

Pette, H
<person> German neuropathologist, 1887-1964. ... See: Pette-Doring disease. ... (05 Mar 2000) ...

Pettit, Auguste
<person> French physician, 1869-1939. ... See: Bachman-Pettit test. ... (05 Mar 2000) ...

peutz-jeghers syndrome
<radiology> Autosomal dominant (50% sporadic), hamartomas, primarily of small bowel, also: stomach, colon, occasionally of urinary or respiratory tract, mucocutaneous hyperpigmentation, increased risk of GI and non-GI tumours! (NEJM 1988) Cf: polyposis syndromes ... (12 Dec 1998) ...

Peutz, J
<person> Dutch physician. ... See: Peutz-Jeghers syndrome, Jeghers-Peutz syndrome. ... (05 Mar 2000) ...

Peutz's syndrome
Synonym for peutz-jeghers syndrome ... <radiology> Autosomal dominant (50% sporadic), hamartomas, primarily of small bowel, also: stomach, colon, occasionally of urinary or respiratory tract, mucocutaneous hyperpigmentation, increased risk of GI and non-GI tumours! (NEJM 1988) Cf: polyposis syndromes ... (12 Dec 1998) ...

pexin
Synonym for chymosin ... <enzyme> The predominant milk-clotting enzyme from the true stomach or abomasum of the suckling calf. It is secreted as an inactive precursor called prorennin and converted in the acid environment of the stomach to the active enzyme. ... Registry number: EC 3.4.23.4 ... (12 Dec 1998) ...

pexinogen
Synonym for prochymosin ... The precursor of chymosin. ... Synonym: chymosinogen, pexinogen, prorennin, renninogen, rennogen. ... (05 Mar 2000) ...

pexis
Fixation of substances in the tissues. ... Origin: G. Pexis, fixation ... (05 Mar 2000) ...

Peyer, Johann
<person> Swiss anatomist, 1653-1712. ... See: Peyer's glands, Peyer's patches. ... (05 Mar 2000) ...

Peyer, Johann Conrad
<person> Was of noble family, studied under Duverney in Paris and later was Professor of Logic, Rhetoric and Medicine in his native town. ... Peyer's Patches - noduli lymphatici aggregati. ... Peyer's Nodules - noduli lymphatici solitarii. ... Lived: 1653-1712. B. Schaffhausen, Dec 26th, 1653, d. Schaffhausen, Feb 29th, 1712. ... (05 Dec 1998) …

peyer's
Patches and the lymphocyte aggregates on mucosal surfaces. ... (09 Oct 1997) ...

peyer's patch
One of the lymphatic nodule aggregates existing in the intestines. ... (09 Oct 1997) ...

peyote
Aztec name for Lophophora williamsii; principal active component of peyote is mescaline. ... Synonym: pellote. ... Origin: Sp. ... (05 Mar 2000) ...

Peyronie, Francois de la
<person> French surgeon, 1678-1747. ... See: Peyronie's disease. ... (05 Mar 2000) ...

Peyronie's disease
A disease of unknown cause in which there are plaques or strands of dense fibrous tissue surrounding the corpus cavernosum of the penis, causing deformity and painful erection; sometimes associated with Dupuytren's contracture. ... Synonym: penile fibromatosis, van Buren's disease. ... (05 Mar 2000) ...

Peyrot, Jean
<person> French surgeon, 1843-1918. ... See: Peyrot's thorax. ... (05 Mar 2000) ...

Pezzer catheter
See: de Pezzer catheter. ... (05 Mar 2000) ...

Pfannenstiel, Hermann Johann
<person> German gynecologist, 1862-1909. ... See: Pfannenstiel's incision. ... (05 Mar 2000) ...

Pfannenstiel's incision
An incision made transversely, and through the external sheath of the recti muscles, about an inch above the pubes, the muscles being split or separated in the direction of their fibres. ... (05 Mar 2000) ...

Pfaundler-Hurler syndrome
Synonym for Hurler's syndrome ... <syndrome> Mucopolysaccharidosis in which there is a deficiency of alpha-l-iduronidase, an accumulation of an abnormal intracellular material, and excretion of dermatan sulfate and heparan sulfate in the urine; with severe abnormality in development of skeletal cartilage and bone, with dwarfism, kyphosis, defo …

Pfaundler, Meinhard von
<person> German physician, 1872-1947. ... See: Pfaundler-Hurler syndrome. ... (05 Mar 2000) ...

Pfeiffer, Richard
<person> German physician, 1858-1945. ... See: Pfeifferella, Pfeiffer's blood agar, Pfeiffer's bacillus, Pfeiffer's phenomenon, Pfeiffer's syndrome. ... (05 Mar 2000) ...

Pfeiffer's bacillus
Synonym for Haemophilus influenzae ... <bacteria> Bacterium sometimes associated with influenza virus infections, causes pneumonia and meningitis. ... (18 Nov 1997) ...

Pfeiffer's blood agar
Solid agar with a few drops of human blood smeared on the surface. ... (05 Mar 2000) ...

Pfeiffer's phenomenon
The alteration and complete disintegration of cholera vibrios when introduced into the peritoneal cavity of an immunised guinea pig, or into that of a normal one if immune serum is injected at the same time; extended to include bacteriolysis in general. ... (05 Mar 2000) ...

Pfeiffer's syndrome
Synonym for type V acrocephalosyndactyly ... Acrocephalosyndactyly with broad short thumbs and great toes, often with duplication (polydactyly) of the great toes and variable syndactyly of other digits; autosomal dominant inheritance. ... Synonym: Pfeiffer's syndrome. ... (05 Mar 2000) ...

Pfeifferella
An obsolete genus of bacteria, the type species of which, Pfeifferella mallei, formerly was placed in the genus Actinobacillus and presently is placed in the genus Pseudomonas. ... Origin: R. F. J. Pfeiffer ... (05 Mar 2000) ...

PFFD
<abbreviation> Proximal femoral focal deficiency. ... (05 Mar 2000) ...

PfKIN protein kinase
<enzyme> Snf1 type protein kinase from plasmodium flaciparum; genbank z22868 ... Registry number: EC 2.7.10.- ... (26 Jun 1999) ...

Pfluger, Eduard
<person> German anatomist and physiologist, 1829-1910. ... See: Pfluger's law. ... (05 Mar 2000) ...

Pfluger's law
Synonym for law of polar excitation ... A given segment of a nerve is irritated by the development of catelectrotonus and the disappearance of anelectrotonus, but the reverse does not hold; i.e., excitation occurs at the cathode when the circuit is closed and at the anode when it is opened. ... Synonym: Pfluger's law. ... (05 Mar 2000) ...

PFOB
<abbreviation> Perfluorooctyl bromide. ... (05 Mar 2000) ...

Pfr
The form of phytochrome that absorbs light in the far red region, 730nm and is thus converted to Pr. It slowly and spontaneously converts to Pr in the dark. ... (18 Nov 1997) ...