'Terra incognita' definitions:

Definition of 'terra incognita'

From: WordNet
noun
An unknown and unexplored region; "they came like angels out the unknown" [syn: unknown, unknown region, terra incognita]

Definition of 'Terra incognita'

From: GCIDE
  • Terra incognita \Ter"ra in*cog"ni*ta\ [L.] An unknown land; unexplored country.
  • The enormous tracts lying outside China proper, still almost terrae incognitae. --A. R. Colquhoun. [Webster 1913 Suppl.]

Synonyms of 'terra incognita'

From: Moby Thesaurus