| positive meniscus | A convexoconcave lens in which the power of the convexity exceeds that of the concavity. Synonym: positive meniscus. (05 Mar 2000) |
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| positive ocular | <microscopy> A Ramsden ocular or any modification of it. The diaphragm is below the field lens. (05 Aug 1998) |
| positive phase | The period following the negative phase, during which the opsonic index rises. (05 Mar 2000) |
| positive rays | Those originating in a gas discharge tube and moving in a direction opposite to that of cathode ray's; made up of positively charged ions. Synonym: positive rays. (05 Mar 2000) |
| positive scotoma | A scotoma that is perceived as a black spot within the field of vision. (05 Mar 2000) |
| positive stain | <technique> Direct binding of a dye with a tissue component to produce contrast; in electron microscopy, heavy metals like uranyl and lead salts are used to bind to selective cell constituents to produce increased density to the electron beam, i.e., contrast. (05 Mar 2000) |
| positive strand RNA viruses | Class IV and VI viruses that have a single stranded RNA genome that can act as mRNA plus strand) and in which the virus RNA is itself infectious. Includes Picornaviridae, Togaviridae and Retroviridae. (18 Nov 1997) |
| positive supporting reactions | Consisting of those reflex muscular contractions whereby the body is supported against gravity; seen in an exaggerated form in the decerebrate animal, negative supporting reaction's, consisting of inhibition of the extensor muscles and unfixing of the joints which thus enable the limb to be flexed and moved into a new position. Synonym: supporting reflexes. (05 Mar 2000) |
| positive taxis | The attraction of protoplasm toward a stimulus. (05 Mar 2000) |
| positive thermotaxis | Attraction of a plant or animal to heat. (05 Mar 2000) |
| positive transference | Transference characterised by predominantly friendly, respectful, and positive feelings on the part of the patient toward the analyst. (05 Mar 2000) |
| positive, false | A result that is erroneously positive when a situation is normal. An example of a false positive: a particular test designed to detect cancer of the toenail is positive but the person does not have toenail cancer. (12 Dec 1998) |
| positive-negative pressure breathing | Inflation of the lungs with positive pressure and deflation with negative pressure by an automatic ventilator. (05 Mar 2000) |
| positive-pressure respiration | A method of mechanical ventilation in which pressure is maintained to increase the volume of gas remaining in the lungs at the end of expiration, thus reducing the shunting of blood through the lungs and improving gas exchange. (12 Dec 1998) |
| positive-pressure respiration, intrinsic | Non-therapeutic positive end-expiratory pressure occurring frequently in patients with severe airway obstruction. It can appear with or without the administration of external positive end-expiratory pressure (positive-pressure respiration). It presents an important load on the inspiratory muscles which are operating at a mechanical disadvantage due to hyperinflation. Auto-peep may cause profound hypotension that should be treated by intravascular volume expansion, increasing the time for expiration, and/or changing from assist mode to intermittent mandatory ventilation mode. (12 Dec 1998) |
Synonyms : Post-Cholecystectomy Syndrome, Post-Choledochoduodenostomy Syndrome, Post-Choledochojejunostomy Syndrome, Post-Choledochostomy Syndrome, Post Cholecystectomy Syndrome, Post Choledochoduodenostomy Syndrome, Post Choledochojejunostomy Syndrome, Sump Syndromes
Synonyms : Arteries, Posterior Cerebral, Artery, Posterior Cerebral, Cerebral Arteries, Posterior, Posterior Cerebral Arteries
Synonyms : Cruciate Ligaments, Posterior, Ligament, Posterior Cruciate, Ligaments, Posterior Cruciate, Posterior Cruciate Ligaments
Synonyms : Cell, Dorsal Horn, Cell, Posterior Horn, Cells, Dorsal Horn, Cells, Posterior Horn, Dorsal Horn Cell, Dorsal Horn Neuron, Neuron, Dorsal Horn, Neuron, Posterior Horn, Posterior Horn Cell, Posterior Horn Neuron, Posterior Horn Neurons
Synonyms : Posterior Nuclear Complex, Posterior Thalamic Nuclear Group, Supergeniculate Nucleus, Complices, Posterior Nuclear, Nuclear Complex, Posterior, Nuclear Complices, Posterior, Nuclei, Posterior Thalamic, Nucleus, Limitans, Nucleus, Submedial
| posthumous |
occurring or coming into existence after a person's death; "a posthumous award"; "a posthumous book"; "a posthumous daughter"
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| posthypnotic suggestion |
a suggestion that is made to a person who is hypnotized that specifies an action he will perform (usually in response to a cue) after he has awakened
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| postnasal drip |
chronic secretion of mucus from the rear of the nasal cavity into the nasopharynx
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| postprandial |
following a meal (especially dinner); "his postprandial cigar"; "took a postprandial walk"
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| postulate |
contend: maintain or assert; "He contended that Communism had no future" take as a given; assume as a postulate or axiom; "He posited three basic laws of nature" (logic) a proposition that is accepted as true in order to provide a basis for logical reasoning necessitate: require as useful, just, or proper; "It takes nerve to do what she did"; "success usually requires hard work"; "This job asks a lot of patience and skill"; "This position demands a lot of personal sacrifice"; "This dinner calls for a spectacular dessert"; "This intervention does not postulate a patient's consent"
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| POS | the act of putting something in a certain place or location |
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| POS | the spatial property of a place where or way in which something is situated |
| POS | position or arrangement of the body and its limbs |
| POS | a rationalized mental attitude |
| POS | a way of regarding situations or topics etc. |
| POS | an item on a list or in a sequence |
| POS | an opinion that is held in opposition to another in an argument or dispute |
| POS | the particular portion of space occupied by a physical object |
| POS | the appropriate or customary location |
| POS | a point occupied by troops for tactical reasons |
| POS | a condition or position in which you find yourself |
| POS | the relative position or standing of things or especially persons in a society |
