Whats an expat? Google keeps coming up with expatriot...is this something like a defector?
That's because an expat is an expatriate.
expatriate
noun |eksˈpātrēit|
a person who lives outside their native country : American expatriates in London.
archaic a person exiled from their native country.
adjective |eksˈpātrēit| [ attrib. ]
(of a person) living outside their native country : expatriate writers and artists.
archaic expelled from one's native country.
verb |eksˈpātrēˌāt| [ intrans. ]
settle oneself abroad : candidates should be willing to expatriate.
DERIVATIVES
expatriation |eksˌpātrēˈā sh ən| noun
ORIGIN mid 18th cent. (as a verb): from medieval Latin expatriat- gone out from one's country, from the verb expatriare, from ex- out + patria native country.
As opposed to a
Defector:
defect 2 |diˈfekt|
verb [ intrans. ]
abandon one's country or cause in favor of an opposing one : he defected to the Soviet Union after the war.
DERIVATIVES
defection |diˈfek sh ən| noun
defector |-tər| noun
ORIGIN late 16th cent.: from Latin defect- failed, from the verb deficere (see defect 1 ).
Just a tip...There are many, many, many on-line dictionaries.