sequence

A sequence is the order in which things happen or are arranged. Think of it like beads on a string: each bead has its place, and together they make a clear pattern. You follow a sequence when baking a cake, because the steps need to happen in the right order. Stories also depend on a sequence of events, with one moment leading to the next. Sometimes it is not about time but about position, such as the order of colors in a rainbow or the order of letters in DNA.

Imagine a detective piecing together clues, trying to work out the right sequence of events to solve a mystery. In math and computer science, sequences are ordered lists of numbers or instructions. In music, a sequence can be a short pattern that repeats at a higher or lower pitch. Whether it is a recipe, a story, or a line of code, a sequence gives things structure and order.

The word "sequence" refers to an ordered set of things that follow one after another. It suggests a clear arrangement in which the position of each item matters. This idea appears in many contexts. In everyday life, you might talk about the sequence of events that led to an important decision, meaning what happened first, what came next, and what happened after that. You might also describe the sequence of steps in a dance routine, a science experiment, or a recipe.

In mathematics, a sequence is an ordered list of elements, such as 2, 4, 6, 8, that often follows a rule. In biology, DNA has a sequence of chemical bases that helps determine genetic traits. In computing, instructions often need to run in a precise sequence for a program to work correctly.

The idea goes beyond simple ordering and often suggests connection or progress. A "sequence of unfortunate events," for example, suggests that one event led to another, forming a chain in a story or situation.

The word comes from the Latin sequentia, meaning "following." That history matches the core idea well: one thing comes after another in a meaningful order. Whether you are talking about a historical timeline, a list of numbers, scenes in a film, or the steps for building a piece of furniture, the word points to things arranged so that their order matters.