[1] : The Collaborative International Dictionary of English v.0.48

orange \or"ange\ o^r"e^nj, n. f.; cf. it. arancia,
   arancio, ll. arangia, sp. naranjia, pg. laranja; all fr. ar.
   n=aranj, per. n=aranj, n=arang; cf. skr. n=aranga
   orange tree. the o- in f. orange is due to confusion with or
   gold, l. aurum, because the orange resembles gold in color.
   1913 webster
   1. the fruit of a tree of the genus citrus citrus
      aurantium. it is usually round, and consists of pulpy
      carpels, commonly ten in number, inclosed in a leathery
      rind, which is easily separable, and is reddish yellow
      when ripe.
      1913 webster

   note: there are numerous varieties of oranges; as, the
         bitter orange, which is supposed to be the original
         stock; the navel orange, which has the rudiment of a
         second orange imbedded in the top of the fruit; the
         blood orange, with a reddish juice; and the horned
         orange, in which the carpels are partly separated.
         1913 webster

   2. bot. the tree that bears oranges; the orange tree.
      1913 webster

   3. the color of an orange; reddish yellow.
      1913 webster

   mandarin orange. see mandarin.

   mock orange bot., any species of shrubs of the genus
      philadelphus, which have whitish and often fragrant
      blossoms.

   native orange, or orange thorn bot., an australian
      shrub citriobatus parviflorus; also, its edible yellow
      berries.

   orange bird zool., a tanager of jamaica tanagra zena;
      -- so called from its bright orange breast.

   orange cowry zool., a large, handsome cowry cypraea
      aurantia, highly valued by collectors of shells on
      account of its rarity.

   orange grass bot., an inconspicuous annual american plant
      hypericum sarothra, having minute, deep yellow
      flowers.

   orange oil chem., an oily, terpenelike substance obtained
      from orange rind, and distinct from neroli oil, which is
      obtained from the flowers.

   orange pekoe, a kind of black tea.

   orange pippin, an orange-colored apple with acid flavor.

   quito orange, the orangelike fruit of a shrubby species of
      nightshade solanum quitoense, native in quito.

   orange scale zool. any species of scale insects which
      infests orange trees; especially, the purple scale
      mytilaspis citricola, the long scale mytilaspis
      gloveri, and the red scale aspidiotus aurantii.
      1913 webster
see also:
citrus citrus aurantium bitter orange navel orange blood orange horned orange 
mandarin orange mandarin mock orange philadelphus native orange 
orange thorn citriobatus parviflorus orange bird tanagra zena orange cowry 
cypraea aurantia orange grass hypericum sarothra orange oil orange pekoe 
orange pippin quito orange solanum quitoense orange scale mytilaspis citricola 
mytilaspis gloveri aspidiotus aurantii 

[2] : WordNet (r) 2.0

citrus aurantium
     n : any of various common orange trees yielding sour or bitter
         fruit; used as grafting stock syn: sour orange, seville
         orange, bitter orange, bitter orange tree, bigarade,
          marmalade orange
see also:
sour orange seville orange bitter orange bitter orange tree bigarade marmalade orange 

Citrus >> C Words
Citrus, definition of term: Citrus
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Citrus Fruit >> C Words
Citrus Fruit, definition of term: Citrus Fruit
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