macronation · noun1
From macro- (“large”) + nation (“a country; a sovereign state”). The micronational sense was likely formed as an antonym of micronation, which was derived from micro- (“small”) + nation (“country”). First attested on 26 November 1996 (see quotations).
macronation · noun2
From macro- (“large”) + nation (“a historically constituted, stable community of people, formed based on a common language, territory, economic life or ethnicity”).
Etymology from Wiktionary, CC BY-SA 4.0.