Suggest an editImprove this articleRefine the answer for “What does "FIFO" mean?”. Your changes go to moderation before they’re published.Approval requiredContentWhat you’re changing🇺🇸EN🇺🇦UAPreviewTitle (EN)Short answer (EN)**FIFO** stands for **First In, First Out**: elements are processed in the same order in which they were added, so the first element added leaves the data structure first. **Key point:** a supermarket line is an example of FIFO - whoever stood in line first is served first.Shown above the full answer for quick recall.Answer (EN)Image**FIFO** stands for **First In, First Out**: *first in, first out*. This is a principle in which elements are processed **in the same order** in which they were added. That is, the first element added leaves the data structure before all the others. Example: a line at a supermarket: whoever stood in line first is served first.For the reviewerNote to the moderator (optional)Visible only to the moderator. Helps review go faster.