from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A tropical or semitropical evergreen (Citrus paradisi) cultivated for its edible fruit.
- n. The large, round fruit of this tree, having a yellow rind and juicy, somewhat acid pulp.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The tree of the species Citrus paradisi.
- n. The large spherical tart fruit produced by this tree.
from the GNU version of the Collaborative International Dictionary of English
- The shaddock.
- n. A citrus tree (Citrus paradisi) bearing large round edible fruit having a thick yellow rind and juicy somewhat acid pulp.
- n. The large yellow fruit of the Citrus paradisi, having somewhat acid juicy pulp. It is a popular breakfast food.
from The Century Dictionary and Cyclopedia
- n. The pomelo, a smaller variety of the shaddock, Citrus decumana: so called in the markets of the northern cities of the United States, probably from its grape-like flavor. It is now successfully cultivated in Florida. See pomelo, shaddock.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. large yellow fruit with somewhat acid juicy pulp; usual serving consists of a half
- n. citrus tree bearing large round edible fruit having a thick yellow rind and juicy somewhat acid pulp
Probably so called because the fruit grows in clusters.(American Heritage® Dictionary of the English Language, Fourth Edition)
From grape + fruit, an allusion to the grapelike clusters of fruit on the tree. Ciardi proposes another theory. The pummelo's botanical name was Citrus grandis, meaning "great citrus [fruit]", due to the large size of the fruits. It would be natural to call the new pummelo variety a "greatfruit". By saying that name a few times, with its consonant cluster, it sounds like "grapefruit", and it would easily have morphed to that form. This second suggestion is completely speculative, without attestation, but seems much more reasonable than the equally speculative "grape cluster" theory. Actually, pummelo fruits do not not grow in grapelike clusters. (Wiktionary)