- The definition of semiweekly is something that occurs twice a week.
A meeting that happens twice a week is an example of a semiweekly meeting.
semiweekly definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
done, happening, published, etc. twice a week
noun pl. semiweeklies
a semiweekly publication
semiweekly definition by American Heritage Dictionary
Issued or occurring twice a week.noun pl. sem·i·week·lies
A semiweekly event or publication.adverb
Twice weekly. See Usage Note at bi-1.