Etymograph

English

elseworld

From else + world.

A compound of else + world

Proto-Indo-European *h₂el- ‘other’

…

Proto-Germanic *aljas ‘of another’

Proto-West Germanic *alljas ‘else’

Old English elles ‘other’

Middle English ells

English else

Proto-Germanic *weraldiz ‘lifetime’

Proto-West Germanic *weraldi

Old English weorold

Middle English world ‘the world’

English world

The story

Genericization of the trademark ElseWorlds, created by DC Comics.

Today it means

noun A fictional setting that is a modification of the common multi-author shared-world setting used in standard stories. A parallel dimension alternate universe setting.

Language periods are conventional ranges, not dates for this word.

Etymograph / elseworld