[1] : The Collaborative International Dictionary of English v.0.48

subterranean \sub`terra"nean\, subterraneous
\sub`terra"neous\, 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`terra"neously, adv.
   1913 webster
see also:
terrace sub`terra"neously 

[2] : WordNet (r) 2.0

subterraneous
     adj 1: being or operating under the surface of the earth;
            "subterranean passages"; "a subsurface flow of water"
            syn: subterranean
     2: lying beyond what is openly revealed or avowed especially
        being kept in the background or deliberately concealed;
        "subterranean motives for murder"; "looked too closely for
        an ulterior purpose in all knowledge"- bertrand russell
        syn: subterranean, ulterior
see also:
subterranean ulterior 

Subterraneous >> S Words
Subterraneous, definition of term: Subterraneous
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