propagate - to move forward following a pettern of dispersion
pra-paa-gaat, pra-apa-gaat, pra-paa-aa-gaat, pra-apa-aa-gaat
pra - prefix to self forth an action denoted by certain verb root.
paa - to obtain (but unlikely as in sanskrit forming compounds of 2 verbs is something I can not think of immediately).
apa - prefix for underaway
aa - prefix for "towards itself"
gaat - going. The root is "ga" which means to go (wow see the connection in sound and how the "a" of learned becomes "o" for the unlearned), and "gat" or "gaat" is either present participle meaning "going" or past participle meaning "gone".