1. 
   Heterosphere
   This is the Hanzi character 熊 (pinyin xiong2); in English, it means "bear". To the extent that my creation of this instance of a character glyph may have invoked some aspect of copyright law, I release the work into the public domain from whence it came. ...
   Found op http://en.wikipedia.org/wiki/Heterosphere
   
   
2. 
   heterosphere
   (from the article `protonosphere`) ...the ionosphere. In the lowest part of the Earth`s atmosphere, called the homosphere (100 km [about 65 miles]), turbulence causes a continuous ... ...diffusion of gases. In this region, which occurs below 100 km (about 60 miles) or so, the composition of the atmo...
   Found op http://www.britannica.com/eb/a-z/h/45
   
   
3. 
   heterosphere
   heterosphere In meteorology, the upper of two portions of the atmosphere as distinguished by the general homogeneity of their composition (the other portion is the homosphere); it begins at 80 to 100 kilometers above the earth, closely coinciding with the ionosphere and the thermosphere, and is char...
   Found op http://www.wordinfo.info/words/index/info/view_unit/1999/4
   
   
4. 
   Heterosphere
   The upper layer in a two part classification of the atmosphere based on the general homogeneity of chemical composition. In this layer, oxygen atoms and nitrogen molecules dominate and remain constant in their relative quantities. The heterosphere extends upward from a height of 80 to 100 kilometers...
   Found op http://www.physicalgeography.net/physgeoglos/h.html
   
   
5. 
   heterosphere
   1) The atmosphere above 80 km (50 mi) where gases are stratified, with concentrations of the heavier gases decreasing more rapidly with altitude than concentrations of the lighter gases.
   Found op http://www.mijnwoordenboek.nl/EN/crossword-dictionary/heterosphere/1
   
   

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