1. 
   Diffusivity
   Dif`fu·siv'i·ty noun Tendency to become diffused; tendency, as of heat, to become equalized by spreading through a conducting medium.
   Found op http://www.encyclo.co.uk/webster/D/64
   
   
2. 
   Diffusivity
   • (n.) Tendency to become diffused; tendency, as of heat, to become equalized by spreading through a conducting medium.
   Found op http://thinkexist.com/dictionary/meaning/diffusivity/
   
   
3. 
   diffusivity
   (from the article `diffusion`) ...dc/dx is the rate of change of concentration in the direction x, and the minus sign indicates the flow is from higher to lower concentration. D is ... While viscosity is concerned with the transfer of momentum and thermal conductivity with the transfer of heat, diff...
   Found op http://www.britannica.com/eb/a-z/d/48
   
   
4. 
   diffusivity
   A measure of the rate of moisture movement through wood by diffusion as a result of differences in moisture content
   Found op http://oak.arch.utas.edu.au/glossary/view_glossarylist.html?term=d
   
   
5. 
   Diffusivity
   [biology] Former President Jimmy Carter autographing a book for Tony The Marine Santiago ...
   Found op http://en.wikipedia.org/wiki/Diffusivity_(biology)
   
   

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