BIANNUAL
    
Meaning of BIANNUAL in English
	
bi ‧ an ‧ nu ‧ al /baɪˈænjuəl/ BrE AmE adjective
 happening twice each year:
a biannual report
 ⇨ annual
, biennial
	
	
	Longman Dictionary of Contemporary English.
    	Longman - Словарь современного английского языка.
	2012