noun
Usage: often capitalized M&D
: an ordering of human history regarded as inevitable and obviously apparent that leads a people or race to expand to geographic limits held to be natural or to extend sovereignty over a usually indefinite area
a step in our manifest destiny, one of several acts of our territorial expansion — Lancaster Pollard
a believer in manifest destiny in Asia — New Republic
the manifest destiny school of historians — C.J.Friedrich
also : the doctrine of or belief in such inevitable expansion
that peculiar type of historical mysticism that we in America call manifest destiny — Donald Heiney