[sem-ee-muhnth-lee, sem-ahy-]
noun, plural sem·i·month·lies.
  1. something occurring every half month or twice a month.
  2. a semimonthly publication.
  1. twice a month: We went semimonthly to see her.

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. 2018

Examples from the Web for semi-monthly

Historical Examples of semi-monthly

Word Origin and History for semi-monthly

also semimonthly, 1809, from semi- + monthly.

Online Etymology Dictionary, © 2010 Douglas Harper