what does bi monthly mean?
bimonthly. adj, adv. 1. every two months. 2. (often avoided because of confusion with sense 1) twice a month; semimonthly.iâ¢monthâ¢ly. 1. occurring every two months. 2. occurring twice a month; semimonthly. 3. a bimonthly publication. 4. every two months. 5. twice a month; semimonthly. [1840â50]. usage: See bi- 1.