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.
Race, family; breed.
A set stage in the development of computing or of a specific technology.
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 version of a form of pop culture which differs from later or earlier versions.
The act of creating a living creature or organism; procreation.
The act of creating something or bringing something into being; production, creation.
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.
A group of people born in a specific range of years and whose members can relate culturally to one another.
A copy of a recording made from an earlier copy and thus further degraded in quality.
A solar year, the time it takes the Earth to complete one revolution of the Sun (between 365.24 and 365.26 days depending on the point of reference).
A Julian year, exactly 365.25 days, represented by "a".
The proportion of a creature's lifespan equivalent to one year of an average human lifespan (see also dog year).
A period between set dates that mark a year, from January 1 to December 31 by the Gregorian calendar, from Tishiri 1 to Elul 29 by the Jewish calendar, and from Muharram 1 to Dhu al-Hijjah 29 or 30 by the Islamic calendar.
A scheduled part of a calendar year spent in a specific activity.
A level or grade in school or college.
The time it takes for any astronomical object (such as a planet, dwarf planet, small Solar System body, or comet) in direct orbit around a star (such as the Sun) to make one revolution around the star.