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

  • n. Any of various evergreen, usually spiny shrubs or trees of the genus Citrus, such as the grapefruit, lemon, or orange, native to southern and southeast Asia, having leathery, aromatic, unifoliolate compound leaves and widely cultivated for their juicy edible fruits that have a leathery aromatic rind.
  • n. The fruit of any of these plants.
  • adj. Of or relating to any of the citrus plants or their fruits.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. Any of several shrubs or trees of the family Rutaceae.
  • n. The fruit of such plants, generally spherical, oblate, or prolate, consisting of an outer glandular skin called zest, an inner white skin, and generally between 8 and 16 sectors filled with pulp consisting of cells with one end attached to the inner skin. Citrus fruits include orange, grapefruit, lemon, lime, and citron.
  • adj. Of, or relating to citrus plants or fruit.

from the GNU version of the Collaborative International Dictionary of English

  • n. A genus of trees including the orange, lemon, lime, tangerine, citron, grapefruit, etc., originally natives of southern Asia.
  • n. any tree belonging to the genus Citrus, having leathery evergreen leaves and bearing a soft pulpy fruit covered by a thick skin; -- called also citrus tree.
  • n. the fruit of a tree belonging to the genus Citrus, having a thick shiny skin and a soft, sweet to tart pulp.

from The Century Dictionary and Cyclopedia

  • n. A citron-tree; in general, any tree or fruit of the genus Citrus: as, citrus-culture; the citrus trade.
  • n. [capitalized] A genus of small trees, natural order Rutaceæ, with pinnate but apparently simple coriaceous and punctate leaves upon usually winged petioles.

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

  • n. any of numerous fruits of the genus Citrus having thick rind and juicy pulp; grown in warm regions
  • n. any of numerous tropical usually thorny evergreen trees of the genus Citrus having leathery evergreen leaves and widely cultivated for their juicy edible fruits having leathery aromatic rinds


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

Latin, citron tree.


  • Lemon, lime and orange all get top marks from me when citrus is in season.

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  • Adding zest from fresh citrus is one of the easiest and best ways to brighten up the flavor of a dish, or to infuse an extra burst into some baked goods.

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  • I've also got one pot of strawberry; its dormant at the moment; We're too hot in Sydney for many pom fruit to take; citrus is our best bet.

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  • But the floral nectar of some plant species also includes small quantities of substances known to be toxic, such as caffeine and nicotine … Caffeine is found at concentration levels of 11-17. 5 milligrams per liter, mostly in citrus flowers.

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  • Sharon: I always laugh when I remember that citrus is technically a winter fruit in the States because I could not agree with you more.

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  • That's a heavy wad, even for an heir to the Ben Hill Griffin citrus fortune.

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  • Locate these spots on your graph, mark them with buoys, then probe them with diving crankbaits in citrus shad or firetiger.

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  • Snapper filet marinated in citrus, frijoles negres, and washed it down with a nice bottle of saw-vee-non-blawnk.

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  • BANKS AND RIPRAP Sweep 45-degree-angle banks and riprap banks with a Bomber BSD5F Suspending Fat Free Fingerling in citrus shad.

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  • Anyway, among the assorted cleansers, pastes, and astringents, I spotted something called a citrus and ginger root body bar (which is actually soap, it turns out).

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  • "Perhaps it was Catherine's Aragonese background that led to the use of lip-smacking Seville organe juice in red-meat stews and pies and the novelty of pairing fish and poultry with lemons, for by 1534 Henry's household was using enough in its cooking to purchase an orange strainer. Oranges were an expensive taste: at the banquet to celebrate Anne Boleyn's coronation at the Company of Leather Sellers in 1533, there was only one citrus fruit."

    --Kate Colquhoun, Taste: The Story of Britain Through Its Cooking (NY: Bloomsbury, 2007), 96

    January 9, 2017