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internally displaced person
gen.	déplacé interne; personne déplacée à l'intérieur de son propre pays
immigr.	personne déplacée à l’intérieure de son propre pays
mil., logist.	personne déplacée
internally displaced persons
gen.	personnes déplacées à l'intérieur de leur propre pays
IMF.	personnes déplacées dans leur propre pays
social.sc.	personnes intérieurement déplacées
UN, polit.	déplacés (n.m.; presse); personnes déplacées (ONU)
English thesaurus
internally displaced person
mil.	A person who, as part of a mass movement, has been forced to flee his or her home or place of habitual residence, suddenly or unexpectedly, as a result of armed conflict, internal strife, systematic violation of human rights, fear of such violation, or natural or man-made disasters, and who has not crossed an internationally recognized state border
mil., logist.	A person who, as part of a mass movement, has been forced to flee his or her home or place of habitual residence suddenly or unexpectedly as a result of armed conflict, internal strife, systematic violation of human rights, fear of such violation, or natural or man-made disasters, and who has not crossed an internationally recognized State border, thus remaining in danger. (FRA)
USA	Any person who has been forced or obliged to flee or to leave their home or places of habitual residence, in particular as a result of or in order to avoid the effects of armed conflict, situations of generalized violence, violations of human rights or natural or human-made disasters, and who have not crossed an internationally recognized state border (JP 3-29)

internally displaced person: 4 phrases in 3 subjects

Human rights activism	1
Immigration and citizenship	2
United Nations	1