Category: I

  • Isospora

    A genus of Sporozoa belonging to the order Coccidia; found worldwide in warm climates as intestinal parasites of mammals, birds, and amphibians.  

  • Isosmotic

    Having the same total concentration of osmotically active molecules or ions in solution as the solution or body fluid to which it is being compared.  

  • Isopyknosis

    Having uniform density, especially being in a state of equal condensation, as in comparing different chromosomes.  

  • Isopters

    Lines on a chart of the field of vision that connect points of equal visual acuity.  

  • Isoprostane

    Any compound similar to prostaglandin that can be used as a marker for tissue damage caused by oxygen-derived free radicals. It is measured in human blood through the use of immunoassay technique and may enhance the study of diseases caused by oxidative stress.  

  • Isoplastic

    Removed from one individual and transplanted to another of the same species, as a graft.  

  • Isophoria

    Equal tension of vertical muscles of each eye with visual lines in the same horizontal plane; absence of hyperphoria and hypophoria. A state where both eyes are aligned on the same horizontal level.  

  • Isometric contraction phase

    The first phase in contraction of the ventricle of the heart in which ventricular pressure increases but there is no decrease in volume of contents because semilunar valves are closed.  

  • Isomerization

    The conversion of one chemical substance to an isomer.  

  • Isomerism

    The state of being composed of compounds of the same number of atoms but having different atomic arrangements in the molecule.