| NV | nausea and vomiting; negative variation; neovascularization; next visit; nonveteran; normal value; n... |
|---|---|
| PFV | physiologic full value |
| pK' | apparent value of a pK; negative logarithm of the dissociation constant of an acid |
| PNP | pancreatic polypeptide; para-nitrophenol; peak negative pressure; pediatric nurse practitioner; peri... |
| PPV | pneumococcal polysaccharide vaccine; porcine parvovirus; positive predictive value; positive pressur... |
| Weigert's law | The loss or destruction of a part or element in the organic world is likely to result in compensatory replacement and overproduction of tissue during the process of regeneration or repair (or both), as in the formation of callus when a fractured bone heals. Synonym: overproduction theory. (05 Mar 2000) |
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| Williston's law | As the vertebrate scale is ascended, the number of bones in the skull is reduced. (05 Mar 2000) |
| Plateau-Talbot law | When successive light stimuli follow each other sufficiently rapidly to become fused, their apparent brightness is diminished. (05 Mar 2000) |
| Wolff's law | Every change in the form and the function of a bone, or in its function alone, is followed by certain definite changes in its internal architecture and secondary alterations in its external conformation. (05 Mar 2000) |
| Muller's law | Each type of sensory nerve ending, however stimulated (electrically, mechanically, etc.), gives rise to its own specific sensation; moreover, each type of sensation depends not upon any special character of the different nerves but upon the part of the brain in which their fibres terminate. Synonym: law of specific nerve energies. (05 Mar 2000) |
| Coppet's law | Solutions having the same freezing point have equal concentrations of dissolved substances. (05 Mar 2000) |
| Poiseuille's law | In laminar flow, the volume of a homogeneous fluid passing per unit time through a capillary tube is directly proportional to the pressure difference between its ends and to the fourth power of its internal radius, and inversely proportional to its length and to the viscosity of the fluid. (05 Mar 2000) |
| coulomb's law | <radiobiology> Force law governing the electrical interaction between charged particles. Force is proportional to (charge of first particle) (charge of second particle) / (square of separation between particles). Constant of proportionality depends on system of units used. (In SI units, it is 1/(4piepsilon_0), where epsilon_0 is the permittivity of free space, approx. 8.854 x 10^-12) (09 Oct 1997) |
| Courvoisier's law | Enlargement of the gallbladder with jaundice is likely to result from carcinoma of the head of the pancreas and not from a stone in the common duct, because in the latter the gallbladder is usually scarred from infection and does not distend. Synonym: Courvoisier's sign. (05 Mar 2000) |
| criminal law | A branch of law that defines criminal offenses, regulates the apprehension, charging and trial of suspected persons, and fixes the penalties and modes of treatment applicable to convicted offenders. (12 Dec 1998) |
| Haeckel's law | The theory formulated by E.H. Haeckel that individuals in their embryonic development pass through stages similar in general structural plan to the stages their species passed through in its evolution; more technically phrased, the theory that ontogeny is an abbreviated recapitulation of phylogeny. Synonym: biogenetic law, law of biogenesis, Haeckel's law, law of recapitulation. (05 Mar 2000) |
| Halsted's law | Transplanted tissue will grow only if there is a lack of that tissue in the host. (05 Mar 2000) |
| Hamburger's law | Albumins and phosphates pass from red corpuscles to serum and chlorides pass from serum to cells when blood is acid; the reverse occurs when blood is alkaline. (05 Mar 2000) |
| Hardy-Weinberg law | <genetics> This genetics law states that the frequencyof a given genotype will reach equilibrium in a randomly mating population and will stay constant over many generations in the absence of selection pressures. (09 Oct 1997) |
| Heidenhain's law | Glandular secretion is always accompanied by an alteration in the structure of the gland. (05 Mar 2000) |