The definition of tedious is something that is boring and repetitive.(adjective)
An example of tedious is the work that someone does on an assembly line.
See tedious in Webster's New World College Dictionary
Origin: ME < LL taediosus
See tedious in American Heritage Dictionary 4
Origin: Middle English
Origin: , from Late Latin taediōsus
Origin: , from Latin taedium, tedium.
Learn more about tedious