Isometric transitionA mode of radioactive decay where a nucleus goes from a higher to a lower energy state. The mass number and the atomic number are unchanged.
IsoplethA broad term for any line on a weather map connecting points with equal values of a particular atmospheric variable (temperature, dew point, etc.).
IsotachA line connecting points of equal wind speed.
IsothermA line connecting points of equal temperature.
isotonicSolutions with the same osmotic potential, as a result of being of the same molar concentration.
isotope(I-soh-tope) A form of a chemical element in which the atoms have the same number of protons (part of the nucleus of an atom) but with a different number…
Isotopesatoms that have the same number of protons, but a different number of neutrons are isotopes of each other.
Isotropicthe property of being independent of direction. Isotropic radiation has the same intensity regardless of the direction of measurement.
Isotropic massA mass having the same property (or properties) in all directions.
isozymeA genetic variant of an enzyme. Isozymes for a given enzyme share the same function, but may differ in level of activity, as a result of minor differences…
ISSRAbbreviation for inter-simple sequence repeat.
IssuesUnresolved conflicts regarding alternative uses of available resources. Subjects of public interest.
ITCZInter-tropical Convergence Zone. The region where the northeasterly and southeasterly tradewinds converge, forming an often continuous band of clouds or…