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Subterraneal vs Subterranean - What's the difference?

subterraneal | subterranean |

As adjectives the difference between subterraneal and subterranean

is that subterraneal is obsolete form of lang=en while subterranean is below ground, under the earth, underground.

subterraneal

English

Adjective

(en adjective)
    • (Webster 1913)

    subterranean

    English

    Adjective

    (en adjective)
  • below ground, under the earth, underground

    • Synonyms

    * subterraneous, subterrene, underground

    Related terms

    * terranean