1. (noun)generation the people in a family or society who are in the same age range my grandmother's generation; the younger/older generation
2. generation the period of time between one age range in a family or society and the next The effects of pollution will be felt for many generations.
3. generation a stage in the development of a product the latest generation of digital camera
4. generation the production of sth the generation of nuclear energy
Definition of 'Generation'
Webster Dictionary
1. (noun)Generation the act of generating or begetting; procreation, as of animals
2. (noun)Generation origination by some process, mathematical, chemical, or vital; production; formation; as, the generation of sounds, of gases, of curves, etc
3. (noun)Generation that which is generated or brought forth; progeny; offspiring
4. (noun)Generation a single step or stage in the succession of natural descent; a rank or remove in genealogy. Hence: The body of those who are of the same genealogical rank or remove from an ancestor; the mass of beings living at one period; also, the averagelifetime of man, or the ordinary period of time at which one rank follows another, or father is succeeded by child, usually assumed to be one third of a century; an age
6. (noun)Generation the formation or production of any geometrical magnitude, as a line, a surface, a solid, by the motion, in accordance with a mathematical law, of a point or a magnitude; as, the generation of a line or curve by the motion of a point, of a surface by a line, a sphere by a semicircle, etc
7. (noun)Generation the aggregate of the functions and phenomene which attend reproduction
Definitions of Generation 
