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

oophorocystosis
Ovarian cyst formation. ... (05 Mar 2000) ...

oophorohysterectomy
Synonym for ovariohysterectomy ... <procedure> Removal of ovaries and uterus. ... Synonym: oophorohysterectomy. ... Origin: ovario-+ G. Hystera, uterus, + ektome, excision ... (05 Mar 2000) ...

oophoroma
<tumour> An ovarian tumour. ... Synonym: ovarioncus. ... (05 Mar 2000) ...

oophoron
Rarely used term for ovary. ... Origin: G. Oon, egg, + phoros, bearing ... (05 Mar 2000) ...

oophoropathy
Synonym for ovariopathy ... Any disease of the ovary. ... Synonym: oophoropathy. ... Origin: ovario-+ G. Pathos, suffering ... (05 Mar 2000) ...

oophoropeliopexy
Synonym: oophororrhaphy. ... Origin: oophoro-+ G. Pellis, pelvis, + pexis, fixation ... (05 Mar 2000) ...

oophoropexy
Surgical fixation or suspension of an ovary. ... Origin: oophoro-+ G. Pexis, fixation ... (05 Mar 2000) ...

oophoroplasty
Plastic operation upon an ovary. ... Origin: oophoro-+ G. Plastos, formed, shaped ... (05 Mar 2000) ...

oophororrhaphy
Suspension of the ovary by attachment to pelvic the wall. ... Synonym: oophoropeliopexy. ... Origin: oophoro-+ G. Rhaphe, suture ... (05 Mar 2000) ...

oophorosalpingectomy
Synonym for ovariosalpingectomy ... <procedure> Operative removal of an ovary and the corresponding oviduct. ... Synonym: oophorosalpingectomy. ... Origin: ovario-+ salpingectomy ... (05 Mar 2000) ...

oophorosalpingitis
Synonym: ovariosalpingitis. ... Origin: oophoro-+ salpingitis ... (05 Mar 2000) ...

oophorostomy
Synonym: ovariostomy. ... Origin: oophoro-+ G. Stoma, mouth. ... (05 Mar 2000) ...

oophorotomy
Synonym: ovariotomy. ... Origin: oophoro-+ G. Tome, incision ... (05 Mar 2000) ...

oophorrhagia
Ovarian haemorrhage. ... Origin: oophoro-+ G. Rhegnymi, to burst forth ... (05 Mar 2000) ...

oophyte
<botany> Any plant of a proposed class or grand division (collectively termed oophytes or Oophyta), which have their sexual reproduction accomplished by motile antherozoids acting on oospheres, either while included in their oogonia or after exclusion. ... This class was at first called Oosporeae, and is made to include all algae and fungi whi …

ooplasm
Protoplasmic portion of the ovum. ... Origin: G. Oon, egg, + plasma, a thing formed ... (05 Mar 2000) ...

oosome
A cytoplasmic body in the ovum that passes into the germ cell. ... Origin: G. Oon, egg + soma, body ... (05 Mar 2000) ...

ootheca
<marine biology> An egg case, especially those of many kinds of mollusks, and of some insects, as the cockroach. Cf. Ooecium. ... Origin: NL, fr. Gr. An egg + a case. ... (19 Mar 1998) ...

ootid
The nearly mature ovum after the first meiotic division has been completed and the second initiated; in most higher mammals, the second meiotic division is not completed unless fertilization occurs. ... Origin: G. Ootidion, a diminutive egg. See -id ... (05 Mar 2000) ...

opacification
1. The process of making opaque. ... 2. The formation of opacities. ... Origin: L. Opacus, shady ... (05 Mar 2000) ...

opacity
The degree to which smoke or particles emitted into the air reduce the transmission of light and obscure the view of an object in the background. ... (05 Dec 1998) ...

opal
<chemical> A mineral consisting, like quartz, of silica, but inferior to quartz in hardness and specific gravity. ... The precious opal presents a peculiar play of colours of delicate tints, and is highly esteemed as a gem. One kind, with a varied play of colour in a reddish ground, is called the harlequin opal. The fire opal has colours like …

opal codon
<molecular biology> The codon UGA, one of the three that causes termination of protein synthesis. ... (18 Nov 1997) ...

opal mutation
<molecular biology> Mutation that changes any codon to the termination codon UGA. ... (18 Nov 1997) ...

opal suppressor
<molecular biology> A gene that codes for an altered tRNA so that its anticodon can recognise the opal codon and thus allows the continuation of protein synthesis. A suppressor of an opal mutation is a tRNA that is charged with the amino acid corresponding to the original codon or a neutral substitute. Some eukaryote cells normally synthesise …

opalescent
Showing a milky iridescence, like an opal. ... (18 Nov 1997) ...

opalescent dentin
Dentin usually associated with dentinogenesis imperfecta. It gives an unusual opalescent or translucent appearance to the teeth. ... Synonym: hereditary opalescent dentin. ... (05 Mar 2000) ...

Opalina
<protozoa> A genus of parasitic protozoans found in the guts of frogs and toads. They look superficially like ciliates, but are classified in a separate group as they have a number of similar nuclei. ... (18 Nov 1997) ...

opaline patch
A mucous patch of silver-gray appearance. ... (05 Mar 2000) ...

Opalski cell
A characteristically altered glial cell in the basal ganglia and thalamus in hepatocerebral degeneration and Wilson's disease. ... (05 Mar 2000) ...

Opalski, Adam
<person> Polish physician, 1897-1963. ... See: Opalski cell. ... (05 Mar 2000) ...

opaque
Impervious to light; not translucent or only slightly so. ... Compare: radiopaque. ... Origin: Fr. Fr. L. Opacus, shady ... (05 Mar 2000) ...

opaque microscope
Synonym for epimicroscope ... <instrument> A microscope with a condenser built around the objective; used for the investigation of opaque, or only slightly translucent, minute specimens. ... Synonym: opaque microscope. ... (05 Mar 2000) ...

opeidoscope
<instrument, physics> An instrument, consisting of a tube having one end open and the other end covered with a thin flexible membrance to the center of which is attached a small mirror. It is used for exhibiting upon a screen, by means of rays reflected from the mirror, the vibratory motions caused by sounds produced at the open end of the tu …

open
Open or unobstructed space; clear land, without trees or obstructions; open ocean; open water. 'To sail into the open.' 'Then we got into the open.' (W. Black) In open, in full view; without concealment; openly. ... 1. Free of access; not shut up; not closed; affording unobstructed ingress or egress; not impeding or preventing passage; not locked up …

open biopsy
<surgery> Surgical incision or excision of the region from which the biopsy is taken. ... (05 Mar 2000) ...

open bite
<dentistry> A malocclusion in which the teeth do not close or come together in the front of your mouth. ... (08 Jan 1998) ...

open chain compound
Synonym for acyclic compound ... An organic compound in which the chain does not form a ring. ... Synonym: aliphatic compound, open chain compound. ... (05 Mar 2000) ...

open chest massage
Rhythmic manual compression of the ventricles of the heart with the hand inside the thoracic cavity. ... (05 Mar 2000) ...

open circuit method
A method for measuring oxygen consumption and carbon dioxide production by collecting the expired gas over a known period of time and measuring its volume and composition. ... (05 Mar 2000) ...

open comedo
A comedo with a wide opening on the skin surface capped with a melanin-containing blackened mass of epithelial debris. ... Synonym: blackhead. ... (05 Mar 2000) ...

open cordotomy
See: cordotomy. ... (05 Mar 2000) ...

open dislocation
A dislocation complicated by a wound opening from the surface down to the affected joint. ... Synonym: compound dislocation. ... (05 Mar 2000) ...

open drainage
Drainage allowing air to enter. ... (05 Mar 2000) ...

open drop anaesthesia
Inhalation anaesthesia by vaporization of a liquid anaesthetic placed drop by drop on a gauze mask covering the mouth and nose. ... (05 Mar 2000) ...

open flap
Synonym for flat flap ... A flap in which during transfer the pedicle is left flat or open, i.e., untubed. ... Synonym: open flap. ... (05 Mar 2000) ...

open fracture
Fracture in which the skin is perforated and there is an open wound down to the fracture. ... Synonym: compound fracture. ... (05 Mar 2000) ...

open head injury
A head injury in which there is a loss of continuity of scalp or mucous membranes; the term is sometimes used to indicate a communication between the exterior and the intracranial cavity. ... See: penetrating wound. ... (05 Mar 2000) ...

open heart surgery
A surgical procedure, known as a coronary artery bypass graft, which involves replacing diseased (narrowed) coronary arteries with veins obtained from the patients lower extremities (autologous graft). During this procedure the patient is placed on a heart bypass machine (heart-lung machine) to allow the surgeon adequate time to perform surgery on …

open hospital
A hospital where all physicians, not members of the regular staff, are permitted to send their patients and control their treatment. ... (05 Mar 2000) ...

open lung biopsy
Synonym for biopsy, open lung ... <investigation, procedure, surgery> A procedure which involves the removal of a small specimen of lung tissue for microscopic analysis via a surgical incision in the chest wall. ... This test can be used to identify a variety of lung cancers, lung infections and lung diseases. ... (21 Mar 1998) ...

open pneumothorax
A free communication between the atmosphere and the pleural space either via the lung or through the chest wall. ... Synonym: sucking wound. ... (05 Mar 2000) ...

open pollination
Pollination by wind, insects, or other natural mechanisms. ... (09 Oct 1997) ...

open reading frame
<molecular biology> A reading frame in a sequence of nucleotides in DNA that contains no termination codons and so can potentially translate as a polypeptide chain. ... (18 Nov 1997) ...

open reading frames
Reading frames where successive nucleotide triplets can be read as codons specifying amino acids and where the sequence of these triplets is not interrupted by stop codons. ... (12 Dec 1998) ...

open reduction of fractures
Reduction by manipulation of bone, after incision in skin and muscle over the site of the fracture. ... (05 Mar 2000) ...

open skull fracture
A fracture with laceration of overlying scalp and/or mucous membrane. ... Synonym: compound skull fracture. ... (05 Mar 2000) ...

open system
A system that exchanges energy and materials with the outside environment. ... (09 Oct 1997) ...

open tuberculosis
Pulmonary tuberculosis, tuberculous ulceration, or other form in which the tubercle bacilli are present in the excretions or secretions; in the lung, usually the result of cavity formation. ... (05 Mar 2000) ...

open wound
A wound in which the tissues are exposed to the air. ... (05 Mar 2000) ...

open-angle glaucoma
<ophthalmology> A disorder which is characterised by increased pressure within the eyeball. ... This occurs secondary to the chronic blockage of normal fluid circulation within the eye. Increased pressure within the eye can cause damage to the optic nerve and eventual blindness. Glaucoma is the leading cause of blindness. ... Symptoms include d …

open-label trial
A study in which both researchers and participants know what drug a person is taking and at what dose. ... (09 Oct 1997) ...

opening
1. The act or process of opening; a beginning; commencement; first appearance; as, the opening of a speech. 'The opening of your glory was like that of light.' (Dryden) ... 2. A place which is open; a breach; an aperture; a gap; cleft, or hole. 'We saw him at the opening of his tent.' (Shak) ... 3. Hence: A vacant place; an opportunity; as, an openin …

opening axis
An imaginary line around which the mandibular condyles may rotate during opening and closing movements. ... Compare: fulcrum line. ... (05 Mar 2000) ...

opening contraction
A contraction produced at the time of opening the circuit when using direct current to stimulate the muscle or a motor nerve. ... (05 Mar 2000) ...

opening movement
In dentistry, movement of the mandible executed during jaw separation. ... (05 Mar 2000) ...

opening of external acoustic meatus
The orifice of the external acoustic meatus in the tympanic portion of the temporal bone. ... Synonym: porus acusticus externus, external acoustic foramen, external acoustic pore, external auditory pore, external auditory foramen, orifice of external acoustic meatus. ... (05 Mar 2000) ...

opening of inferior vena cava
The orifice through which the inferior vena cava opens into the right atrium. ... Synonym: ostium venae cavae inferioris, orifice of inferior vena cava. ... (05 Mar 2000) ...

opening of internal acoustic meatus
The inner opening of the internal acoustic meatus on the posterior surface of the petrous part of the temporal bone. ... Synonym: porus acusticus internus, internal acoustic foramen, internal acoustic pore, auditory pore, internal auditory foramen, orifice of internal acoustic meatus. ... (05 Mar 2000) ...

opening of pulmonary trunk
The opening of the pulmonary trunk from the right ventricle, guarded by the pulmonary valve. ... Synonym: ostium trunci pulmonalis, pulmonary orifice. ... (05 Mar 2000) ...

opening of superior vena cava
The point of entry of the superior vena cava into the right atrium. ... Synonym: ostium venae cavae superioris, orifice of superior vena cava. ... (05 Mar 2000) ...

opening of the sphenoidal sinus
One of the pair of openings in the body of the sphenoid bone through which the sphenoid sinuses communicate with the sphenoethmoidal recess of the nasal cavity. ... Synonym: apertura sinus sphenoidalis, sphenoidal sinus aperture. ... (05 Mar 2000) ...

opening of uterus
Synonym for external os of uterus ... The vaginal opening of the uterus. ... Synonym: ostium uteri, mouth of the womb, opening of uterus, orificium externum uteri, os uteri externum, ostium uteri externum. ... (05 Mar 2000) ...

opening to cerebral aqueduct
Synonym for anus cerebri ... Entrance to the cerebral aqueduct (of Sylvius) from the caudal part of the third ventricle. ... Synonym: aditus ad aqueductum cerebri, Bartholin's anus, opening to cerebral aqueduct. ... (05 Mar 2000) ...

openings of pulmonary veins
The orifices of the pulmonary veins, usually two on each side, in the wall of the left atrium. ... Synonym: ostia venarum pulmonalium. ... (05 Mar 2000) ...

openm
1. To make or set open; to render free of access; to unclose; to unbar; to unlock; to remove any fastening or covering from; as, to open a door; to open a box; to open a room; to open a letter. 'And all the windows of my heart I open to the day.' (Whittier) ... 2. To spread; to expand; as, to open the hand. ... 3. To disclose; to reveal; to interpret …

opera
1. A drama, either tragic or comic, of which music forms an essential part; a drama wholly or mostly sung, consisting of recitative, arials, choruses, duets, trios, etc, with orchestral accompaniment, preludes, and interludes, together with appropriate costumes, scenery, and action; a lyric drama. ... 2. The score of a musical drama, either written …

opera citato
In the work cited, used to avoid the repetition of part of a bibliographic reference already given. ... (09 Jan 1998) ...

opera-glass hand
A deformity of the hand seen in chronic absorptive arthritis, the fingers and wrists being shortened and the covering skin wrinkled into transverse folds; the phalanges appear to be retracted into one another like an opera glass or miniature telescope. ... Synonym: main en lorgnette. ... (05 Mar 2000) ...

operable
Denoting a patient or condition on which a surgical procedure can be performed with a reasonable expectation of cure or relief. ... (05 Mar 2000) ...

operant
In conditioning, any behaviour or specific response chosen by the experimenter; its frequency is intended to increase or decrease by the judicious pairing with it of a reinforcer when it occurs. ... Synonym: target behaviour, target response. ... (05 Mar 2000) ...

operant behaviour
The behaviour whose continuation and frequency is determined by its consequences on the doer; central element of behavioural conditioning theory. ... See: conditioning. ... (05 Mar 2000) ...

operant conditioning
A type of conditioning developed by Skinner in which an experimenter waits for the target response (head scratching) to be conditioned to occur (emitted) spontaneously, immediately after which the organism is given a reinforcer reward; after this procedure is repeated many times, the frequency of emission of the targeted response will have signific …

operate
1. To perform a work or labour; to exert power or strengh, physical or mechanical; to act. ... 2. <medicine> To produce an appropriate physical effect; to issue in the result designed by nature; especially, to take appropriate effect on the human system. ... 3. To act or produce effect on the mind; to exert moral power or influence. 'The virtue …

operating microscope
Synonym for surgical microscope ... <instrument> A binocular microscope used to obtain good visualization of fine structures in the operating field; in the standing type of microscope, a motorised zoom lens system operated by hand or foot controls provides an adjustable working distance; in headborne models, interchangeable oculars provide the …

operating room information systems
Information systems, usually computer-assisted, designed to store, manipulate, and retrieve information for planning, organizing, directing, and controlling administrative activities associated with the provision and utilization of operating room services and facilities. ... (12 Dec 1998) ...

operating room nursing
The functions of the professional nurse in the operating room. ... (12 Dec 1998) ...

operating room technicians
Specially trained personnel to assist in routine technical procedures in the operating room. ... (12 Dec 1998) ...

operating rooms
Facilities equipped for performing surgery. ... (12 Dec 1998) ...

operating table
A table on which the patient lies during a surgical operation. ... (05 Mar 2000) ...

operation
1. The act or process of operating; agency; the exertion of power, physical, mechanical, or moral. 'The pain and sickness caused by manna are the effects of its operation on the stomach.' (Locke) 'Speculative painting, without the assistance of manual operation, can never attain to perfection.' (Dryden) ... 2. The method of working; mode of action.< …

operations research
A group of techniques developed to apply scientific methods and tools to solve the problems of decision making in complex organizations and systems. Operations research searches for optimal solutions in situations of conflicting goals and makes use of mathematical models from which solutions for actual problems may be derived. ... (12 Dec 1998) ...

operative
1. Having the power of acting; hence, exerting force, physical or moral; active in the production of effects; as, an operative motive. 'It holds in all operative principles.' (South) ... 2. Producing the appropriate or designed effect; efficacious; as, an operative dose, rule, or penalty. ... 3. <surgery> Based upon, or consisting of, an operat …

operative dentistry
Usually, the individual restoration of teeth by means of metallic or nonmetallic materials. ... Synonym: restorative dentistry. ... (05 Mar 2000) ...

operative myxoedema
Myxoedema developing after thyroidectomy. ... (05 Mar 2000) ...

operator
<molecular biology> The site on DNA to which a specific repressor protein binds and prevents the initiation of transcription at the adjacent promoter. ... (18 Nov 1997) ...

operator gene
A gene with the function of activating the production of messenger RNA by one or more adjacent structural loci; part of the feedback system for determining the rate of production of an enzyme. ... (05 Mar 2000) ...

operator region
<genetics> DNA sequences which signal the initiation of transcription when derepressed. ... (12 Dec 1998) ...

opercular fold
Tissue forming a bridge or an adhesion between the tonsil and the anterior pillar of the fauces. ... (05 Mar 2000) ...

opercular part
One of the three small cortical convolutions together forming a cover for the insular region. Opercular convolutions are frontal, temporal, and parietal. ... Synonym: pars opercularis. ... (05 Mar 2000) ...