propagate >> /ˈprɑpəˌɡeɪt/
Definition: [transitive verb] Breed specimens of (a plant or animal) by natural processes from the parent stock.
Example: try propagating your own houseplants from cuttings
Definition: [transitive verb] Spread and promote (an idea, theory, etc.) widely.
Example: the French propagated the idea that the English were violent and gluttonous drunkards
Definition: [transitive verb] (with reference to motion, light, sound, etc.) transmit or be transmitted in a particular direction or through a medium.
Example: electromagnetic effects can be propagated at a finite velocity only through material substances