n.1 all the people born at a particular time, regarded collectively (my generation; the rising generation).
2 a single step in descent or pedigree (have known them for three generations).
3 a stage in (esp. technological) development (fourth-generation computers).
4 the average time in which children are ready to take the place of their parents (usu. reckoned at about 30 years).
5 production by natural or artificial process, esp. the production of electricity or heat.
6 a procreation; the propagation of species. b the act of begetting or being begotten.
Phrases and idioms:
generation gap differences of outlook or opinion between those of different generations.
Derivatives:
generational adj.
Etymology: ME f. OF f. L generatio -onis (as GENERATE)