The story
From Latin subterrāneus + -an. Compare subterrane and subterraneous.
Etymology from Wiktionary, CC BY-SA 4.0.
subterranean
sub·ter·ra·ne·anToday it means: Below ground, under the earth, underground. Full definition →
Today it means: Below ground, under the earth, underground. Full definition →
From Latin subterrāneus + -an. Compare subterrane and subterraneous.
Etymology from Wiktionary, CC BY-SA 4.0.