Where does “cryptoterrestrial” come from?

cryptoterrestrial (English) comes from English Terrestrial, from Latin terrestris, from Latin Terra, from Proto-Indo-European ters- — dry.

cryptoterrestrial (English): Relating to a technologically advanced civilization claimed to be hidden on the Earth and evidenced by UFOs

Definitions

  1. Relating to a technologically advanced civilization claimed to be hidden on the Earth and evidenced by UFOs

Ancestry of “cryptoterrestrial”, step by step

cryptoterrestrial traces back through two separate lines of ancestry.

via English Terrestrial

StepLanguageWordMeaning
1EnglishTerrestrialAn inhabitant of the planet Earth
2LatinterrestrisOf or pertaining to the earth or land;...
3LatinTerraTerra goddess of the Earth
4Proto-Indo-Europeanters-dry

via English crypto

StepLanguageWordMeaning
1EnglishcryptoA secret supporter or follower; Cryptography;...
Every word from Proto-Indo-European ters-