plural timelines
1
: a plan which shows the order of events that will happen, things that will be done, etc.
She drew up a timeline [=timetable] for the project.
2
: a line that includes marks showing when particular events happened in the past
The timeline shows the important events in American history.
Cite this Entry
“Timeline.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/timeline. Accessed 15 Jun. 2026.
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