Dictionary

terra incognita

noun ter·ra in·cog·ni·ta \ˈter-ə-ˌin-ˌkäg-ˈnē-tə, -in-ˈkäg-nə-tə\

: a place that has not been discovered or that is unknown

plural ter·rae in·cog·ni·tae \ˈter-ˌī-ˌin-ˌkäg-ˈnē-ˌtī, -in-ˈkäg-nə-ˌtī\

Full Definition of TERRA INCOGNITA

:  unknown territory :  an unexplored country or field of knowledge

Examples of TERRA INCOGNITA

  1. the terra incognita beyond those mountains

Origin of TERRA INCOGNITA

Latin
First Known Use: 1611

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