Indonesia

word-forming element meaning "of or pertaining to India" (and some other place), from Greek Indo-, from Indos "India" (see India).

peninsula south of Thrace, from Greek khersonesos "peninsula," etymologically "island connected to the mainland," from khersos "dry land, mainland" + nēsos "island," also "(flooded) land near a river, alluvial land," which is of uncertain origin; traditionally from PIE root sna- "to swim," but this is now generally rejected. "As words for 'island' differ from language to language, [nēsos] is probably an Aegean loan (note that Lat. insula is also of unclear origin)" [Beekes]. Compare isle.

 Greek khersos is perhaps from PIE root *ghers- "to bristle" (see horror (n.)) if the Greek word first referred to "arid, stubbly land, and only later to land in opposition to water" [Beekes].