1. 
   subluminal
   Below or beneath the structure facing the lumen of an organ. ... (05 Mar 2000) ...
   Found op http://www.mondofacto.com/facts/dictionary?subluminal
   
   
2. 
   subluminal
   subluminal Having or being a speed less than that of light.
   Found op http://www.wordinfo.info/words/index/info/view_unit/1212/7
   
   
3. 
   subluminal
   Less than the speed of light.
   Found op http://www.daviddarling.info/encyclopedia/S/subluminal.html
   
   
4. 
   subluminal
   Type: Term Pronunciation: sŭb-lū′mi-năl Definitions: 1. Below or beneath the structure facing the lumen of an organ.
   Found op http://www.medilexicon.com/medicaldictionary.php?t=85910
   
   

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