sequence (sequences plural )
1 n-count A sequence of events or things is a number of events or things that come one after another in a particular order.
(=series)
...the sequence of events which led to the murder.
2 n-count A particular sequence is a particular order in which things happen or are arranged.
...the colour sequence yellow, orange, purple, blue, green and white...
3 n-count A film sequence is a part of a film that shows a single set of actions.
The best sequence in the film occurs when Roth stops at a house he used to live in.
4 n-count A gene sequence or a DNA sequence is the order in which the elements making up a particular gene are combined.
The project is nothing less than mapping every gene sequence in the human body.