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sequence

/ˈsiː.kwəns/
IELTSAcademic
noun

A sequence is a series of things, events, or actions that happen in a fixed order. It can also mean one part of a larger pattern or set.

  • The teacher explained the sequence of steps.
  • Watch the sequence of scenes carefully.
  • The numbers form a clear sequence.
verb

To sequence something is to arrange it in a particular order. In science, it can also mean to find the order of parts in something, like DNA.

  • Please sequence the tasks from easiest to hardest.
  • The team sequenced the DNA sample.
  • We sequenced the events before writing the report.

Adinary Nuance

Sequence is close to order, series, and chain, but it strongly suggests a clear, connected order. Use sequence when the order matters, not just the number of items. A series can be a group without a strong fixed order, but a sequence always feels arranged. In academic English, sequence is common for steps, events, numbers, and scientific processes.

In other languages

Vietnamese
chuỗi
Spanish
secuencia
Chinese
顺序
Japanese
順序
Korean
순서

Etymology

Sequence comes from Latin sequentia, meaning “following” or “what comes next.” It entered English through Old French in the late Middle Ages.

Common phrases

in sequencea sequence of eventsDNA sequencesequence of steps

Synonyms

Related words

Frequently asked questions

Is sequence a formal word?
Yes, it is common in formal, academic, and business English, but it is still widely used in daily speech.
What is the difference between sequence and series?
A sequence usually means a clear order. A series is a group of things, and the order may matter less.
Can I use sequence in writing about exams or instructions?
Yes. It is a very good word for steps, instructions, and events in order.
What does DNA sequence mean?
It means the order of parts in DNA. Scientists study that order to learn about genes.