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.
EXPONENTIAL FUNCTIONS. THE SYSTEM OF NATURAL LOGARITHMS has the number called e as it base; it is the system we use in all theoretical work. (In the next Lesson, we will see that e is approximately 2.718.) The system of natural logarithms is in contrast to the system of common logarithms, which has 10 as its base and is used for most practical work.