1. 
   half-yearly
   [adv] - every half year, every six months
   Found op http://www.webdictionary.co.uk/definition.php?query=half-yearly
   
   
2. 
   Half-yearly
   Half'-year`ly (-yēr`lȳ) adjective Two in a year; semiannual. -- adverb Twice in a year; semiannually.
   Found op http://www.encyclo.co.uk/webster/H/7
   
   
3. 
   half-yearly
   adverb every half year, every six months
   Found op http://wordnetweb.princeton.edu/perl/webwn?s=half-yearly
   
   
4. 
   Half-yearly
   • (a.) Two in a year; semiannual. -- adv. Twice in a year; semiannually.
   Found op http://thinkexist.com/dictionary/meaning/half-yearly/
   
   

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