Tyndall

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

• Tyndall, John 1820-1893. Irish-born British physicist known for his work on the transparency of gases and the absorption by gases of radiant heat.
• MountTyndall A mountain, 4,275.8 m (14,019 ft) high, in the Sierra Nevada of south-central California.

from Wiktionary, Creative Commons Attribution/Share-Alike License

• proper n. An English surname, a variant of Tindall Tyndale Tindill .

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

• n. 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)