1. (n.) The act of generating or begetting; procreation, as of animals.

2. (n.) Origination by some process, mathematical, chemical, or vital; production; formation; as, the generation of sounds, of gases, of curves, etc.

3. (n.) That which is generated or brought forth; progeny; offspring.

4. (n.) 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 average lifetime 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.

5. (n.) Race; kind; family; breed; stock.

6. (n.) 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. (n.) The aggregate of the functions and phenomena which attend reproduction.

Platonic year abiogenesis aeon age age group annus magnus archigenesis authorship begetting beginning biogenesis birth blastogenesis breeding coinage conception concoction contrivance contriving creation creative effort crop crossbreeding cycle cycle of indiction date day days development devising digenesis dissogeny endogamy engenderment epigenesis epoch era establishment eumerogenesis fabrication fathering formation formulation genesis great year hatching heterogenesis histogenesis homogenesis improvisation inbreeding inception indiction initiation institution invention isogenesis life lifetime linebreeding making do merogenesis metagenesis mintage monogenesis multiplication origination orthogenesis outbreeding pangenesis parthenogenesis period period of existence procreation production proliferation propagation reproduction spontaneous generation start time times xenogamy