A Generation

1. The act of creating something or bringing something into being; production, creation. [from 14th c.]
2. The act of creating a living creature or organism; procreation. [from 14th c.]
3. (now US, dialectal) Race, family; breed. [from 14th c.]
4. A single step or stage in the succession of natural descent; a rank or degree in genealogy, the members of a family from the same parents, considered as a single unit. [from 14th c.]
5. (obsolete) Descendants, progeny; offspring. [15th-19th c.]
6. The average amount of time needed for children to grow up and have children of their own, generally considered to be a period of around thirty years, used as a measure of time. [from 17th c.]
7. A set stage in the development of computing or of a specific technology. [from 20th c.]
8. (geometry) 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, by the motion of a point, of a surface by a line, a sphere by a semicircle, etc.
9. A group of people born in a specific range of years and whose members can relate culturally to one another.
10. A version of a form of pop culture which differs from later or earlier versions.
11. (television) A copy of a recording made from an earlier copy and thus further degraded in quality