Related to infusion: Intravenous infusion. [in-fuÂ´zhun] 1. the steeping of a substance in water to obtain its soluble principles. 2. the product obtained by this process. 3. the slow therapeutic introduction of fluid other than blood into a vein. See also intravenous infusion. note: An infusion flows in by gravity, an injection is forced in by a syringe, an instillation is dropped in, an insufflation is blown in, and an infection slips in unnoticed.
Inverse Logarithm. Logarithm of a number is defined as the power, that is raised to a fixed value called base, is raised to get that particular number. For example: 10$^{2}$ = 100, then log$_{10}$100 = 2. Inverse logarithm is the inverse of logarithm function. It is opposite to logarithm.
In the same way as the logarithm reverses exponentiation, the complex logarithm is the inverse function of the exponential function applied to complex numbers. The discrete logarithm is another variant; it has uses in public-key cryptography.