1. 
   perihelium
   Origin: NL, fr. Gr. About, near + the sun. ... <astronomy> That point of the orbit of a planet or comet which is nearest to the sun; opposed to aphelion. ... Source: Websters Dictionary ... (01 Mar 1998) ...
   Found op http://www.mondofacto.com/facts/dictionary?perihelium
   
   
2. 
   Perihelium
   • (n.) That point of the orbit of a planet or comet which is nearest to the sun; -- opposed to aphelion.
   Found op http://thinkexist.com/dictionary/meaning/perihelium/
   
   

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