ಅರ್ಥ : The spreading of something (a belief or practice) into new regions.
ಸಮಾನಾರ್ಥಕ : extension
ಅರ್ಥ : The act of producing offspring or multiplying by such production.
ಸಮಾನಾರ್ಥಕ : generation, multiplication
ಅರ್ಥ : The movement of a wave through a medium.