noun

• The act of creating something or bringing something into being; production, creation.
• The act of creating a living creature or organism; procreation.
• (now US, dialectal) Race, family; breed.
• 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.
• (obsolete) Descendants, progeny; offspring.
• 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.
• A set stage in the development of computing or of a specific technology.
• (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.
• A group of people born in a specific range of years and whose members can relate culturally to one another.
• A version of a form of pop culture which differs from later or earlier versions.
• (television) A copy of a recording made from an earlier copy and thus further degraded in quality.
• (cellular automata) A single iteration of a cellular automaton rule on a pattern.