Definition of geneses:
(n) :
The origin, start, or point at which something comes into being.
(n) :
(religion, biblical) The first book in the Hebrew Bible.
(n) :
(Canada, US, video games) A video game console, the Sega Genesis, also marketed as the Mega Drive outside North America.
(n) :
A female given name from Ancient Greek of American usage since the 1980s.