subterrestrial


Also found in: Thesaurus.

sub·ter·res·tri·al

 (sŭb′tə-rĕs′trē-əl)
adj.
Subterranean; underground.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:

subterrestrial

adjective
Located or operating beneath the earth's surface:
The American Heritage® Roget's Thesaurus. Copyright © 2013, 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
References in periodicals archive ?
He and some friends traverse Paris through the city's underground infrastructure, where they meet fellow subterrestrial pilgrims ("cataphiles" they're called, at least in Paris), and reconnoiter peculiar evidence of people determined to leave their mark in this tenebrous turf.
But what if, he asked, there should ever develop within America "subterrestrial" (or "unheavenly") cities.