A hypervisor or virtual machine monitor (VMM) is computer software, firmware, or hardware, that creates and runs virtual machines. A computer on which a hypervisor runs one or more virtual machines is called a host machine, and each virtual machine is called a guest machine. The hypervisor presents the guest operating systems with a virtual operating platform and manages the execution of the guest operating systems.
Definition of REGRESS. 1. a: an act or the privilege of going or coming back b: reentry 1. 2. : movement backward to a previous and especially worse or more primitive state or condition. 3. : the act of reasoning backward.
A regressive tax is a tax imposed in such a manner that the tax rate decreases as the amount subject to taxation increases.Regressive describes a distribution effect on income or expenditure, referring to the way the rate progresses from high to low, so that the average tax rate exceeds the marginal tax rate.he measure can be applied to individual taxes or to a tax system as a whole; a year, multi-year, or lifetime. The opposite of a regressive tax is a progressive tax, in which the average tax rate increases as the amount subject to taxation increases.