| Noun | 1. | Citrus paradisi - citrus tree bearing large round edible fruit having a thick yellow rind and juicy somewhat acid pulpgrapefruit - large yellow fruit with somewhat acid juicy pulp; usual serving consists of a half genus Citrus - orange; lemon; lime; etc. citrus tree, citrus - any of numerous tropical usually thorny evergreen trees of the genus Citrus having leathery evergreen leaves and widely cultivated for their juicy edible fruits having leathery aromatic rinds |