thoron


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Related to thoron: radon, thorium

tho·ron

 (thôr′ŏn′)
n.
A radioactive isotope of radon, Rn-220, having a half-life of 54.5 seconds and produced by the disintegration of thorium.

American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

thoron

(ˈθɔːrɒn)
n
(Chemistry) a radioisotope of radon that is a decay product of thorium. Symbol: Tn or 220Rn; atomic no: 86; half-life: 54.5s
[C20: from thorium + -on]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
References in periodicals archive ?
Research in school-based agricultural education (SBAE) should critically analyze the curriculum taught and investigate the effectiveness of teaching methods to determine how the content is most effectively taught (Thoron & Myers, 2011a).
Experimental or quasi-experimental research on the effectiveness of curriculum design and teaching methodology in SBAE programs is vital to establish a wide-body of empirical evidence that can support best teaching and learning practices in modern SBAE (Thoron & Myers, 2011a).
Radon ([sup.222]Rn), Thoron ([sup.220] Rn) and actinon ([sup.219]Rn) are the radionuclides that are found in the gaseous form in the decay series of Uranium and Thorium.
Joe Thoron's EARTHQUAKE (0761421025), VOLCANOES (076142105X), TORNADOES (0761421041) and HURRICANES (0761421033) survey the science and problems of major natural disasters, while Dan Elish's NASA (0761420460), SATELLITES (0761420983), GALAXIES (0761420479) and SUN (0761420487) provide a blend of natural history and insights on human endeavors.
"It's not exactly a memory play-- it's more of a mural play," Elise Thoron jokes about Green Violin, her retelling of the little-known story of artist Marc Chagall's relationship with the Soviet Yiddish Theatre, known as GOSET, in the 1920s.
Because agriculture is considered a science (Thoron & Myers, 2010a), and because an essential component of science education is the inclusion of laboratory exercises (NRC, 2000; NRC, 2006; Roth, 1990), then laboratory instruction is necessary for a quality agricultural education program (Baker, Thoron, Myers, & Cody, 2008).
This focus prompted agricultural education to conduct several studies to demonstrate the science connections in agricultural education and the teachers' willingness to provide agricultural education as an integrated science in the secondary educational curricula (Myers, Thoron, & Thompson, 2009).