quarterly

1 :  computed for or payable at 3-month intervals a quarterly premium

2 :  recurring, issued, or spaced at 3-month intervals

3 :  divided into heraldic quarters or compartments

:  a periodical published four times a year

:  four times a year Interest is compounded quarterly.

:  coming or happening four times a year They hold quarterly meetings.

:  a magazine published four times a year