pervade - Dictionary definition and meaning for word pervade
Sounds like SPREAD
Remeber Pervasive computing ?? Pervasive is Ubiquitous that is present everywhere... Pervade >> Pervasive >> Spread everywhere
pervade = per means something is going to destroy at a rate, Vade means barriage, the barriage is going to destroy at a rate i.e water is spreading through the barriage.
soldiers of PERsia inVADED the country by SPREADING across its boundaries