{ Sub`ter*ra"ne*an (?), Sub`ter*ra"ne*ous (?), } a. [L. subterraneus; sub under + terra earth. See Terrace.] Being or lying under the surface of the earth; situated within the earth, or under ground; as, subterranean springs; a subterraneous passage. -- Sub`ter*ra"ne*ous*ly, adv.

{ Sub`ter*ra"ne*an (?), Sub`ter*ra"ne*ous (?), } a. [L. subterraneus; sub under + terra earth. See Terrace.] Being or lying under the surface of the earth; situated within the earth, or under ground; as, subterranean springs; a subterraneous passage. -- Sub`ter*ra"ne*ous*ly, adv.