From Middle English myddyl erthe and middel-erde, from earlier middelerd, middenerd, from Old English middanerd (“Middle Earth”), variant of middanġeard (“Earth, the world”, literally “the middle yard, enclosure, or realm”) mis- or reinterpreting its meaning, from Proto-Germanic *midjagardaz, ultimately from Proto-Indo-European *medhyo (“middle”) and Proto-Indo-European *ghartos (“enclosure”). Cognate with Norwegian & English Midgard (q.v.) and Danish, Norwegian, & Swedish Midgård.
- (archaic) The Earth, (chiefly Norse mythology) synonym for Midgard, the world of traditional Germanic cosmology, conceived as a realm between heaven (Asgard) and hell (Niflheim).
- (fiction) Alternative form of : the setting of the Lord of the Rings series.