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

citrus \cit"rus\ si^t"ru^s, n. l., a citron tree.
   1. bot. a genus of trees including the orange, lemon, lime,
      tangerine, citron, grapefruit, etc., originally natives of
      southern asia.
      1913 webster

   2. bot. 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.
      pjc

   3. bot. the fruit of a tree belonging to the genus
      citrus, having a thick shiny skin and a soft, sweet to
      tart pulp.
      pjc
see also:
citrus citrus tree 

[2] : WordNet (r) 2.0

citrus
     n 1: any of numerous fruits of the genus citrus having thick rind
          and juicy pulp; grown in warm regions syn: citrus
          fruit, citrous fruit
     2: 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 syn: citrus tree
see also:
citrus fruit citrous fruit citrus tree 

[3] : U.S. Gazetteer (1990)

citrus, ca cdp, fips 13560
  location: 34.11488 n, 117.89089 w
  population 1990: 9481 2537 housing units
  area: 2.3 sq km land, 0.0 sq km water

[4] : U.S. Gazetteer Counties (2000)

citrus -- u.s. county in florida
   population 2000:    118085
   housing units 2000: 62204
   land area 2000:     583.810635 sq. miles 1512.062538 sq. km
   water area 2000:    189.337907 sq. miles 490.382908 sq. km
   total area 2000:    773.148542 sq. miles 2002.445446 sq. km
   located within:       florida fl, fips 12
   location:             28.894637 n, 82.469163 w
   headwords:
    citrus
    citrus, fl
    citrus county
    citrus county, fl

[5] : U.S. Gazetteer Places (2000)

citrus, ca -- u.s. census designated place in california
   population 2000:    10581
   housing units 2000: 2659
   land area 2000:     0.897850 sq. miles 2.325420 sq. km
   water area 2000:    0.000000 sq. miles 0.000000 sq. km
   total area 2000:    0.897850 sq. miles 2.325420 sq. km
   fips code:            13560
   located within:       california ca, fips 06
   location:             34.114891 n, 117.891786 w
   zip codes 1990:    
   note: some zip codes may be omitted esp. for suburbs.
   headwords:
    citrus, ca
    citrus

Citrus >> C Words
Citrus, definition of term: Citrus
citrus_pag1.html

Citrus Fruit >> C Words
Citrus Fruit, definition of term: Citrus Fruit
citrus+fruit_pag1.html