The Collaborative International Dictionary of English v.0.48:

Julian \Jul"ian\ (?; 277) a. [L. Julianus, fr. Julius. Cf.
   July, Gillian.]
   Relating to, or derived from, Julius Caesar.
   [1913 Webster]

   Julian calendar, the calendar as adjusted by Julius Caesar,
      in which the year was made to consist of 365 days, each
      fourth year having 366 days.

   Julian epoch, the epoch of the commencement of the Julian
      calendar, or 46 b. c.

   Julian period, a chronological period of 7,980 years,
      combining the solar, lunar, and indiction cycles (28 x 19
      x 15 = 7,980), being reckoned from the year 4713 B. C.,
      when the first years of these several cycles would
      coincide, so that if any year of the period be divided by
      28, 19, or 15, the remainder will be the year of the
      corresponding cycle. The Julian period was proposed by
      Scaliger, to remove or avoid ambiguities in chronological
      dates, and was so named because composed of Julian years.


   Julian year, the year of 365 days, 6 hours, adopted in the
      Julian calendar, and in use until superseded by the
      Gregorian year, as established in the reformed or
      Gregorian calendar.
      [1913 Webster]

WordNet (r) 3.0 (2006):

Julian
    adj 1: of or relating to or characteristic of Julius Caesar;
           "the Julian calendar"
    n 1: Roman Emperor and nephew of Constantine; he restored
         paganism as the official religion of the Roman Empire and
         destroyed Christian temples but his decision was reversed
         after his death (331?-363) [syn: Julian, Julian the
         Apostate, Flavius Claudius Julianus]

U.S. Gazetteer Places (2000):

Julian, NE -- U.S. village in Nebraska
   Population (2000):    63
   Housing Units (2000): 35
   Land area (2000):     0.088176 sq. miles (0.228374 sq. km)
   Water area (2000):    0.000000 sq. miles (0.000000 sq. km)
   Total area (2000):    0.088176 sq. miles (0.228374 sq. km)
   FIPS code:            24915
   Located within:       Nebraska (NE), FIPS 31
   Location:             40.521309 N, 95.867413 W
   ZIP Codes (1990):     68379
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Julian, NE
    Julian


U.S. Gazetteer Places (2000):

Julian, CA -- U.S. Census Designated Place in California
   Population (2000):    1621
   Housing Units (2000): 902
   Land area (2000):     7.915424 sq. miles (20.500853 sq. km)
   Water area (2000):    0.000000 sq. miles (0.000000 sq. km)
   Total area (2000):    7.915424 sq. miles (20.500853 sq. km)
   FIPS code:            37582
   Located within:       California (CA), FIPS 06
   Location:             33.070930 N, 116.585601 W
   ZIP Codes (1990):     92036
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Julian, CA
    Julian


U.S. Gazetteer Places (2000):

Julian, PA -- U.S. Census Designated Place in Pennsylvania
   Population (2000):    152
   Housing Units (2000): 61
   Land area (2000):     0.143746 sq. miles (0.372301 sq. km)
   Water area (2000):    0.000000 sq. miles (0.000000 sq. km)
   Total area (2000):    0.143746 sq. miles (0.372301 sq. km)
   FIPS code:            38528
   Located within:       Pennsylvania (PA), FIPS 42
   Location:             40.863230 N, 77.940677 W
   ZIP Codes (1990):     16844
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Julian, PA
    Julian