Quarterly
Quarterly reviews, issues of quarterly publications, change of seasons.
Something that occurs TWICE a month is called SEMI monthly (semi=half) and something that occurs every TWO months is called BI-Monthly (BI=TWO)
Quarterly
Quarterly.
Every three months
Every three months is called a quarter. And there are four quarters in a year.
It occurs every 5 months, twice a year.
To be on the safe side, you should change your email password every three months. Some email programs are more secure than others. Most of them suggest changing it every three months on average.
Change oil every three months
A bimonthly is a publication which occurs either once every two months or twice a month.
Yes