Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun A tropical or semitropical evergreen tree (Citrus paradisi) cultivated for its edible fruit.
  • noun The large, round fruit of this tree, having a yellow rind and juicy, somewhat acid pulp.

from The Century Dictionary.

  • noun 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 the GNU version of the Collaborative International Dictionary of English.

  • The shaddock.
  • noun A citrus tree (Citrus paradisi) bearing large round edible fruit having a thick yellow rind and juicy somewhat acid pulp.
  • noun The large yellow fruit of the Citrus paradisi, having somewhat acid juicy pulp. It is a popular breakfast food.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun The tree of the species Citrus paradisi.
  • noun The large spherical tart fruit produced by this tree.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun large yellow fruit with somewhat acid juicy pulp; usual serving consists of a half
  • noun citrus tree bearing large round edible fruit having a thick yellow rind and juicy somewhat acid pulp

Etymologies

from The American Heritage® Dictionary of the English Language, 4th Edition

[Probably so called because the fruit grows in clusters.]

from Wiktionary, Creative Commons Attribution/Share-Alike License

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.

Examples

  • If you're wondering about the name grapefruit, it references the fact that the fruit grows in grape-like clusters on the tree.

    The Full Feed from HuffingtonPost.com

  • My co-worker brought in a huge bag of grapefruit from the Valley (yes, the Texas valley).

    An epiphany about grapefruit | Homesick Texan

  • We just enjoyed some grapefruit from a neighbor whose parents live near Harlingen, TX.

    An epiphany about grapefruit | Homesick Texan

  • Up to this point, I have had to slice all of the individual sectors with a knife which takes way too long especially when the anticipation of eating the grapefruit is too much to stand already.

    Archive 2008-02-01

  • Up to this point, I have had to slice all of the individual sectors with a knife which takes way too long especially when the anticipation of eating the grapefruit is too much to stand already.

    Peace Corps Bulgaria: Three Parter

  • Grapefruit: Everyone knows the juiciest, largest and sweetest ruby red grapefruit comes from the Rio Grande Valley.

    Homesick Texan holiday gift guide 2007 | Homesick Texan

  • Grapefruit: Everyone knows the juiciest, largest and sweetest ruby red grapefruit comes from the Rio Grande Valley.

    Archive 2007-12-01

  • Instead, I live in the pedestrian community of Ajijic where I pick my morning grapefruit from the garden tree every morning in season.

    Pozos

  • Instead, I live in the pedestrian community of Ajijic where I pick my morning grapefruit from the garden tree every morning in season.

    Pozos

  • Instead, I live in the pedestrian community of Ajijic where I pick my morning grapefruit from the garden tree every morning in season.

    Pozos

Comments

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  • cross between a pomelo and an orange

    July 24, 2007

  • What have grapes got to do with it?

    December 8, 2007

  • They grow in bunches, like grapes, so someone called them grapefruit. Cool, huh?

    December 8, 2007

  • I like the Slovene name for this fruit: grenivka (pronounced something like gren-IW-ka], which comes from the word grenak, meaning "bitter".

    December 16, 2007

  • Seen here.

    July 27, 2009

  • Betcha didn't know this is the name of a strain of medical marijuana!

    January 15, 2010