My parents almost named me grapefruit...true story

Naming the Grapefruit
Reverend Griffith Hughes came upon the grapefruit in 1750 and called it the "forbidden fruit" when he and others were seeking the origin of the tree of good and evil in the Garden of Eden. The grapefruit carried the "forbidden fruit" name for many years after.

Originally named Citrus paradisi Macf., the grapefruit was considered a sport of the pummelo, the giant of the citrus family. Botanically, a sport is a dramatic variation of the normal variety resulting from a mutation. James MacFayden, a botanist, differentiated the grapefruit from the pummelo in his 1837 work Flora of Jamaica.

More than 100 years later in 1948 citrus horticulturists began to examine the grapefruit's botanical origins and concluded it was not a sport of the pummelo but a hybrid between the pummelo and the orange that occurred accidentally. The grapefruit now has the scientific name Citrus X paradisi.

The grapefruit's common name probably came from the 19th century naturalist who noted that the fruits appeared to grow in clusters like grapes. He was observing those fist-sized fruits that grew from seeds brought to the West Indies by Captain Shaddock.

Several attempts to change the grapefruit's name to something more appealing were unsuccessful. American horticulturists, convinced the grapefruit's name was unfitting, wanted to call it pomelo, but some people suggested it would be confused with pummelo. Then as recently as 1962, the Florida Citrus Mutual attempted to give the grapefruit a name that would be more commercially appealing and increase its marketability. This effort, too, failed because of public outcry. The grapefruit is still a grapefruit.

Some Dutch people refer to the grapefruit as a shaddock, others call it a pampelmoose, a name originally given to a pomelo but now used for grapefruit.

The French call grapefruit pamplemousse (pumpkin-sized citron). The Italians named it pompelmo.