bimester

[ bahy-mes-ter, bahy-mes- ]
/ baɪˈmɛs tər, ˈbaɪ mɛs- /

noun

a two-month period.

Origin of bimester

< Latin bimē(n)stris of a bimester, equivalent to bi- bi-1 + mē(n)s- (stem of mēnsis) month + -tris adj. suffix