Definition of grapefruit in English:

grapefruit

Syllabification: grape·fruit
Pronunciation: /ˈgrāpˌfro͞ot
 
/

noun (plural same)

  • 1A large, round, yellow citrus fruit with an acid, juicy pulp.
    More example sentences
    • In a bowl, combine the grapefruit, blood orange, lemon, lime, and tangerine segments.
    • Like grapefruit, bitter orange can boost blood levels of many medications and increase the risk of side effects.
    • I watched him this morning juicing a grapefruit, guava, blood orange, mango, plums, and grapes and pouring the elixir into a giant glass pitcher.
  • 2The tree bearing the grapefruit.
    • Citrus paradisi, family Rutaceae
    More example sentences
    • Mark called in about black mould on his grapefruit tree and fruit.
    • The grapefruit tree produced 19 fruits last year.
    • When his group planted Florida-derived rootstock of Star Ruby grapefruit in Texas, the fruit produced some 50 percent more of this carotenoid than it had in Florida.

Origin

early 19th century: from grape + fruit (probably because the fruits grow in clusters).

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