1. 
   Orthocenter
   Or`tho·cen'ter noun [ Ortho- + center .] (Geom.) That point in which the three perpendiculars let fall from the angles of a triangle upon the opposite sides, or the sides produced, mutually intersect.
   Found op http://www.encyclo.co.uk/webster/O/34
   
   
2. 
   orthocenter
   <geometry> That point in which the three perpendiculars let fall from the angles of a triangle upon the opposite sides, or the sides produced, mutually intersect. ... Origin: Ortho- + center. ... Source: Websters Dictionary ... (01 Mar 1998) ...
   Found op http://www.mondofacto.com/facts/dictionary?orthocenter
   
   
3. 
   Orthocenter
   • (n.) That point in which the three perpendiculars let fall from the angles of a triangle upon the opposite sides, or the sides produced, mutually intersect.
   Found op http://thinkexist.com/dictionary/meaning/orthocenter/
   
   
4. 
   orthocenter
   orthocenter The point at which the three altitudes of a triangle intersect.
   Found op http://www.wordinfo.info/words/index/info/view_unit/1515/2
   
   
5. 
   orthocenter
   The point of intersection of the altitudes of a triangle.
   Found op http://www.daviddarling.info/encyclopedia/O/orthocenter.html
   
   

Tip: double click on a word to show its meaning.