'Semimonthly' definitions:

Definition of 'semimonthly'

(from WordNet)
adverb
Twice a month; "salaries are paid semimonthly" [syn: semimonthly, bimonthly]
adjective
Occurring twice a month; "a semimonthly publication" [syn: semimonthly, bimonthly]
noun
A periodical that is published twice each month (or 24 issues per year)

Definition of 'Semimonthly'

From: GCIDE
  • Semimonthly \Sem`i*month"ly\a. Coming or made twice in a month; as, semimonthly magazine; a semimonthly payment. -- n. Something done or made every half month; esp., a semimonthly periodical. -- adv. In a semimonthly manner; at intervals of half a month. [1913 Webster]