Artificial intelligent assistant

hypogeous

hypogeous, a.
  (hɪpəʊ-, haɪpəʊˈdʒiːəs)
  Also -gæous.
  [f. as hypoge-an + -ous.]
  Underground; = hypogean.

1847 Craig, Hypogæous. 1857 Berkeley Cryptog. Bot. §274. 271 It is amongst the hypogeous species that the most beautiful..fruit is produced. 1880 Gray Struct. Bot. (ed. 6) 19 This hypogaeous (i.e. underground) situation of the cotyledons throughout the germination.

Oxford English Dictionary

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