1. Chicago Academy of Science2. Chemical Abstracts Service (which assigns CAS Numbers to chemicals)Definition for cascade process : the procedure for increasing the strength of a weak signal by the progressive build-up of electron displacement in a series of dynode plates in a photomultiplier. Definition for Cascade prodrug :A cascade prodrug is a prodrug for which the cleavage of the carrier group becomes effective only after unmasking an activating group.Definition for CASSCRF : complete active space multiconfiguration self-consistent field; something that is incorporated into very complete ab initio molecular dynamics calculations.