📒 all the people who were born at about the same time
📒 the average time in which children grow up, become adults and have children of their own, (usually considered to be about 30 years)
📒 a single stage in the history of a family
📒 a group of people of similar age involved in a particular activity
📒 a stage in the development of a product, usually a technical one
📒 the production of something, especially electricity, heat, etc.