it means something happened twice in a month!
Twice a month means that something happens two times in one month, usually on a regular schedule.
If something happens twice a month it is called biweekly because it happens every other week and a month has 4 weeks. there is also bimonthly which is every other month but not really a direct word for something that happens twice a month.
Prefix "semi" means twice; therefore, semimonthly occurs twice a month.
Biannual means twice every year.
Twice is a word that means two.
the word ing
It means multiply by two. As in "what is twice 3" that means what is 3x2.
No! bi-monthly means every two months, like bi-weekly means every two weeks. semi-monthly means twice a month. Think of mortgage payments or payroll, bi-weekly payroll means one receives payroll every second week (i.e. every second Friday). Semi-monthly payroll means twice a month (typically the 1st and 15th of the month).
Bi-monthly has an ambiguity to it, it can mean 'twice a month' or 'every two months'. Where as semi-monthly means only 'twice a month'.