We don't have synonyms for dragon fruit yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are dragonfruit.
(n) :
The fruit of certain cacti of the genus (Stenocereus (syn. Hylocereus) spp.), cultivated in Southeast Asia and Central and South America, having cerise-pink- or yellow-coloured skin and a white or pink sweet fleshy interior with black seeds.
(n) :
The fruit of certain cacti of the genus (Stenocereus (syn. Hylocereus) spp.), cultivated in Southeast Asia and Central and South America, having cerise-pink- or yellow-coloured skin and a white or pink sweet fleshy interior with black seeds.