adjective Also sub·ter·ra·ne·ous.
Examples from the Web for subterraneous
It is suggested that radium may be responsible for this subterraneous heat.The Story of Evolution|Joseph McCabe
But this first, though apparently the most appalling, is not the most destructive effect of these subterraneous combustions.The Life of Sir Humphrey Davy, Bart. LL.D., Volume 2 (of 2)|John Ayrton Paris
Many were found the next day in the subterraneous passages of the Castle, with symptoms of recovering animation.Social England under the Regency, Vol. 1 (of 2)|John Ashton.
A goat, which fell into the opening, discovered the subterraneous passage.
A further descent leads into a subterraneous chapel, lit up with lamps, which are kept continually burning.Ruins of Ancient Cities (Vol. I of II)|Charles Bucke