A potent melding of the words marginalization and alienation, using the martian (Mars-dwelling) as the aliens.
also: to martianalize.
To marginalize and alienate a certain individual or group of individuals by a bigger group of individuals.
CoolPerson1: Listen up everyone... Operation Martianalization is now under effect.
*Everyone ignores the UncoolInfiltrator*
CoolPerson2: Ahah look at that loser in the corner.
CoolPerson3: Yeah, we've decided to martianalize them.
*CoolPersons 2&3 high-five*