[ sem-ee-muhnth-lee, sem-ahy- ]
/ ˌsɛm iˈmʌnθ li, ˌsɛm aɪ- /


made, occurring, done, or published twice a month.

noun, plural sem·i·month·lies.

something occurring every half month or twice a month.
a semimonthly publication.


twice a month: We went semimonthly to see her.

Nearby words

  1. semimajor axis,
  2. semimatte,
  3. semimembranous,
  4. semimicroanalysis,
  5. semiminor axis,
  6. seminal,
  7. seminal colliculus,
  8. seminal duct,
  9. seminal fluid,
  10. seminal gland

Origin of semimonthly

First recorded in 1855–60; semi- + monthly

Can be confusedbimonthly biweekly semimonthly (see usage note at bi-1)

Usage note

See bi-1. Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for semimonthly