/sem'ee munth"lee, sem'uy-/ , adj., n., pl. semimonthlies , adv.
adj.
1. made, occurring, done, or published twice a month.
n.
2. something occurring every half month or twice a month.
3. a semimonthly publication.
adv.
4. twice a month: We went semimonthly to see her.
[ 1855-60; SEMI- + MONTHLY ]
Usage . See bi- 1 .