Orange (fruit)
An orange was a citrus fruit native to Earth. It was enveloped by an orange-colored rind or peel which was generally removed prior to consumption of the fruit. The juice of an orange was used to make a beverage called, aptly enough, orange juice.

When Sub-commander T'Pol tried to take command of  she mentioned her superior authority. Trip Tucker compared her arguments to apples and oranges and reminded her that she was an observer on this mission and Enterprise an Earth ship. ()

In 2269, oranges were served at a picnic on the Shore Leave Planet. ()

The same year, Scotty compared the breaking dilithium crystals with oranges. They were unpeeling like the rind of an orange. ()

In 2270, what appeared to be oranges were among the fruit served on a platter to Kirk, Spock, and McCoy while they were temporarily being held in the Lactra VII zoo. ()

Also in 2270, an orange was among the fruit on a platter on the dining table on the . Later, oranges were among the items that the food synthesizer spat out at Montgomery Scott. () 

When the  was bombarded by an energy beam after encountering a crystalline planet in 2269, Montgomery Scott reported that the starship's dilithium crystals were "unpeeling like the rind of an orange." ()

Oranges were amongst the fruit that Groppler Zorn offered to Commander Riker when he first visited his office on Deneb IV. ()

While stranded in San Francisco of 1893, Data passed a street salesman who sold fruits, including green and red apples, oranges, and bananas. ()

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de: Orange
Earth foods
Fruits
Earth plants