adverb

Twice a month or every two months.

the magazine appears bimonthly

noun

A periodical produced twice a month or every two months.

In order to overcome this difficult period, we have decided to change BOWLING DIGEST’S frequency from a bimonthly to a quarterly.

journal,publication,magazine,newspaper,paper,review,digest,gazette,newsletter,organ,serial,annual,quarterly,monthly,bimonthly,fortnightly,weekly,biweekly

adjective

Done, produced, or occurring twice a month or every two months.

a bimonthly newsletter