Definition of terra incognita in English:

terra incognita

Syllabification: ter·ra in·cog·ni·ta
Pronunciation: /ˈterə ˌinkäɡˈnētə, inˈkäɡnitə


Unknown or unexplored territory.
More example sentences
  • The Highlands and Western Isles of Scotland were terra incognita to almost all Englishmen, and most Lowland Scots.
  • When Thomas Jefferson sent young Meriwether Lewis, William Clark, and the Corps of Discovery to survey the lands beyond the Mississippi, the West was terra incognita.
  • Hence, large tracts of the North-Central Norwegian Caledonides are practically terra incognita with respect to late- to post-orogenic structural development.


Latin, 'unknown land'.

Definition of terra incognita in:

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Pronunciation: dɪˈmɒrəlʌɪz
cause (someone) to lose confidence or hope