Note: in AM, use 'semiannual'
1.
Half-yearly means happening in the middle of a calendar year or a financial year. ( BRIT )
...the Central Bank’s half-yearly report on the state of the economy.
ADJ : ADJ n
2.
A company’s half-yearly profits are the profits that it makes in six months. ( BRIT )
The company announced a half-yearly profit of just £2 million.
ADJ : ADJ n
3.
Half-yearly means happening twice a year, with six months between each event. ( BRIT )
...half-yearly payments.
ADJ : usu ADJ n