(9) Internal Revenue Code means the Internal Revenue Code of 1986 in effect for the federal tax year beginning on January 1, 2007, not including any changes made by federal law after that date, and any regulations adopted under that code applicable to that period.
Absorbance spectroscopy, commonly referred to as spectrophotometry, is the analytical technique based on measuring the amount of light absorbed by a sample at a given wavelength.
The noun ABSORPTION has 6 senses: 1. (chemistry) a process in which one substance permeates another; a fluid permeates or is dissolved by a liquid or solid. 2. (physics) the process in which incident radiated energy is retained without reflection or transmission on passing through a medium.