half-year

• halfyear, half year

From half- +‎ year.

half-year (plural half-years)

1. The period of time equal to half a year; normally referred to as 6 months, but a half-year is more exactly 182.5 days (without a leap day)
   • 1906, The Investor's Monthly Manual - Volume 36 - Page 381:

     The report for the half-year ended December 31st states that the gross earnings of the half-year are Rs.8,72,854 less, the working expenses Rs.1o,41,28o more, and the net earnings Rs.19,14,134 less than those of the corresponding halfyear of 1904.

• half-yearly