The power or character of an emperor; imperial authority; the spirit of empire.
The policy, practice, or advocacy of seeking, or acquiescing in, the extension of the control, dominion, or empire of a nation, as by the acquirement of new, esp. distant, territory or dependencies, or by the closer union of parts more or less independent of each other for operations of war, copyright, internal commerce, etc.
So long as there is imperialism in the world, a permanent peace is impossible. Hassan Nasrallah
If it were necessary to give the briefest possible definition of imperialism, we should have to say that imperialism is the monopoly stage of capitalism. Vladimir Lenin
Like a cyclone, imperialism spins across the globe; militarism crushes peoples and sucks their blood like a vampire. Karl Liebknecht
The truth is that neither British nor American imperialism was or is idealistic. It has always been driven by economic or strategic interests. Charley Reese
These wars appear also to have given its death blow to colonialism and to imperialism in its colonial form, under which weaker peoples were treated as possessions to be economically exploited. At least we hope that such colonialism is on the way out. Emily Greene Balch