- a large, round, edible citrus fruit with a pale-yellow rind, juicy pulp, and a somewhat sour taste
- the semitropical evergreen tree (Citrus paradisi) of the rue family, that bears grapefruit
Origin of grapefruitso named because it grows in clusters
- A tropical or semitropical evergreen tree (Citrus paradisi) cultivated for its edible fruit.
- The large, round fruit of this tree, having a yellow rind and juicy, somewhat acid pulp.
Origin of grapefruitProbably so called because the fruit grows in clusters
(plural grapefruits or grapefruit)
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.