B3I1C3E1N1T1E1N1N1I1A1L1
16 points
BICENTENNIAL is validvalid
a bicentenary [n BICENTENNIALS]
happening every two hundred years [adj] / a two hundred year anniversary, also BICENTENARY [n -S]
a bicentenary [n BICENTENNIALS]
happening every two hundred years [adj] / a two hundred year anniversary, also BICENTENARY [n -S]