Quadrennial

Quad·ren'ni·al adjective [ Latin quadriennium a space of four years; quattuor four + annus year; confer Latin quadriennis . See Quadrate , and Annual .] 1. Comprising four years; as, a quadrennial period. 2. Occurring once in four ...
Found on http://www.encyclo.co.uk/webster/Q/1

Quadrennial

• (a.) Comprising four years; as, a quadrennial period. • (a.) Occurring once in four years, or at the end of every four years; as, quadrennial games.
Found on http://thinkexist.com/dictionary/meaning/quadrennial/

quadrennial

lasting four years; occurring once every four years
Found on http://phrontistery.info/q.html
No exact match found