the act of producing offspring or multiplying by such production | the act of starting something |
the production of heat or electricity | the first part or section of something |
a coming into being | the event consisting of the start of something |
group of genetically related organisms constituting a single step in the line of descent | the place where something begins, where it springs into being |
all the people living at the same time or of approximately the same age | the time at which something is supposed to begin |
the normal time between successive generations | |
a stage of technological development or innovation | |