Noun
-
a periodical that is published twice a month or every two months (either 24 or 6 issues per year)
Adjective
-
occurring every two months
"bimonthly visits"
-
occurring twice a month
"a semimonthly publication"
Adverb
-
every two months
"the bill was payable bimonthly"
-
twice a month
"salaries are paid semimonthly"