[1] : The Collaborative International Dictionary of English v.0.48

tangelo \tan"gelo\ ta^n"j-el=o, n. tangerine +
   pomelo.
   a hybrid between the tangerine orange and the grapefruit, or
   pomelo; also, the fruit.
   webster 1913 suppl.

[2] : WordNet (r) 2.0

tangelo
     n 1: hybrid between grapefruit and mandarin orange; cultivated
          especially in florida syn: tangelo tree, ugli fruit,
           citrus tangelo
     2: large sweet juicy hybrid between tangerine and grapefruit
        having a thick wrinkled skin syn: ugli, ugli fruit
see also:
tangelo tree ugli fruit citrus tangelo ugli 

Tangelo >> T Words
Tangelo, definition of term: Tangelo
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