Definify.com

Webster 1913 Edition

Noun.

The state of being national; national attachment; nationality.

An idiom, trait, or character peculiar to any nation.

National independence; the principles of the Nationalists.

nationalism ‎(countable and uncountable, plural nationalisms)

Patriotism; the idea of supporting one's country, people or culture.
Support for the creation of a sovereign nation (which does not currently exist).
Basque nationalism, Kurdish nationalism
(Britain, Ireland) Support for the union of Northern Ireland and the Republic of Ireland.
Jingoism; the support of one nation's interests to the exclusion of others; the hatred of other nations.

idea of supporting one's country and culture

Kurdish: neteweperwerî (ku), welatperwerî (ku), niştimanperwerî (ku), welatparêzî (ku), neteweparêzî (ku), nasyonalîzm (ku), neteweperistî (ku), نه‌ته‌وه‌یی, وڵات پارێزی
Kyrgyz: улутчулдук (ky) ‎(ulutçulduk)
Latin: nationalismus m
Latvian: nacionālisms m
Lithuanian: nacionalizmas (lt) m
Malay: nasionalisme
Maltese: nazionalismu m
Norwegian: nasjonalisme (no)
Persian: ناسیونالیسم (fa) ‎(nâsionâlism)
Polish: nacjonalizm (pl) m
Portuguese: nacionalismo (pt) m
Romanian: naționalism (ro) m
Russian: национали́зм (ru) m ‎(nacionalízm)
Scottish Gaelic: nàiseantachd f
Serbo-Croatian:

Cyrillic: национализам m

Roman: nacionalizam (sh) m
Slovak: nacionalizmus m
Slovene: nacionalizem m
Spanish: nacionalismo (es) m
Swahili: utaifa (sw)
Swedish: nationalism (sv) c
Tagalog: pagkamakabayan, pagkamakabansa
Tatar: милләтчелек (tt) ‎(millätçelek)
Thai: ชาตินิยม (th) ‎(châat níyom)
Turkish: milliyetçilik (tr), ulusçuluk (tr), ulusçuluk (tr)
Ukrainian: націоналізм (uk) m ‎(nacionalízm)
Vietnamese: chủ nghĩa dân tộc (主義民族)
Yiddish: נאַציאָנאַליזם m ‎(natsyonalizm)