1. 
   Megameter
   Me·gam'e·ter noun [ Mega- + -meter : confer French mégamètre .] (Physics) 1. An instrument for determining longitude by observation of the stars. 2. A micrometer. [ R.] Knight.
   Found op http://www.encyclo.co.uk/webster/M/41
   
   
2. 
   megameter
   <astronomy, instrument> An instrument for determining longitude by observation of the stars. ... Origin: F. Megametre. ... (29 Oct 1998) ...
   Found op http://www.mondofacto.com/facts/dictionary?megameter
   
   
3. 
   Megameter
   • (n.) An instrument for determining longitude by observation of the stars. • (n.) Alt. of Megametre • (n.) A micrometer.
   Found op http://thinkexist.com/dictionary/meaning/megameter/
   
   

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