occurring every two months.
occurring twice a month; semimonthly.
a bimonthly publication.
every two months:
Next year we plan six field trips to take place bimonthly.
twice a month; semimonthly.
Historical Examples

On the Trail of The Immigrant Edward A. Steiner
The Life of Sir Rowland Hill, Vol. II (of 2) Rowland Hill
The Deaf Harry Best
A History of Science, Volume 5(of 5) Henry Smith Williams
Four Years in Rebel Capitals T. C. DeLeon
Scientific American, Vol. XXXVII.–No. 2. [New Series.], July 14, 1877 Various
Molly Brown’s Freshman Days Nell Speed
The Fantasy Fan January 1934 Various
The Two First Centuries of Florentine History Pasquale Villari
The Governments of Europe Frederic Austin Ogg

adjective, adverb
every two months
(often avoided because of confusion with sense 1) twice a month; semimonthly See bi-1
noun (pl) -lies
a periodical published every two months


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