WordNet (r) 3.0 (2006):

Tyndall
    n 1: British physicist (born in Ireland) remembered for his
         experiments on the transparency of gases and the absorption
         of radiant heat by gases and the transmission of sound
         through the atmosphere; he was the first person to explain
         why the daylight sky is blue (1820-1893) [syn: Tyndall,
         John Tyndall]

U.S. Gazetteer Places (2000):

Tyndall, SD -- U.S. city in South Dakota
   Population (2000):    1239
   Housing Units (2000): 579
   Land area (2000):     1.581212 sq. miles (4.095320 sq. km)
   Water area (2000):    0.000000 sq. miles (0.000000 sq. km)
   Total area (2000):    1.581212 sq. miles (4.095320 sq. km)
   FIPS code:            64860
   Located within:       South Dakota (SD), FIPS 46
   Location:             42.991775 N, 97.863539 W
   ZIP Codes (1990):     57066
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Tyndall, SD
    Tyndall