HYPOGEAN

Adjective

hypogean (comparative more hypogean, superlative most hypogean)

Existing or growing underground.

Synonyms

• hypogeal, hypogeous

• subterraneous, subterrene, underground, subterranean

Coordinate terms

• epigean

Source: Wiktionary

Hyp`o*ge"an, a. Etym: [Pref. hypo- + Gr. (Bot.)

Definition: Hypogeous. [Written also hypogæan.]

Source: Webster’s Unabridged Dictionary 1913 Edition