Definition of "Generation" :
noun: the act of producing offspring or multiplying by such production
noun: the production of heat or electricity
"Dams were built for the generation of electricity."
noun: a coming into being
noun: group of genetically related organisms constituting a single step in the line of descent
noun: all the people living at the same time or of approximately the same age
noun: the normal time between successive generations
"They had to wait a generation for that prejudice to fade."
noun: a stage of technological development or innovation
"The third generation of computers."