epigealPronunciation: /ˌɛpɪˈdʒiːəl/Definition of epigeal adjective Botany growing on or close to the ground. Compare with hypogeal. (of seed germination) with one or more seed leaves appearing above the ground. Origin: mid 19th century: from Greek epigeios (from epi 'upon' + gē 'earth') + -alepigeal in other Oxford dictionaries Definition of epigeal in the US English dictionary