English Reference
adjective · noun

binary

adj. · n.
US /ˈbaɪnɝi/ UK /bˈaɪnəɹi/ bi·na·ry UK spelling binaries

  1. 01 B2 Upper Intermediate

    adj.having two parts or involving two things.

    adj.composed of or involving two things or parts; characterized by a dual nature.

    Simple

    The scientists looked at a binary star system where two stars orbit each other.

    In context

    The researchers analyzed the binary relationship between the two chemical compounds to see how they reacted under pressure.

  2. 02 B2 Upper Intermediate Technical Computing

    adj.related to a system of numbers that uses only 0 and 1.

    adj.relating to or using a system of numerical notation that has 2 as its base.

    Simple

    Computers process all information using binary code made of zeros and ones.

    In context

    The processor executes instructions by manipulating binary digits, which represent the most fundamental level of data storage.

    base 2
  3. 03 C1 Advanced Academic

    adj.describing a situation where there are only two possible and opposite choices.

    adj.relating to a system or logic where only two mutually exclusive states or outcomes are possible.

    Simple

    The debate was not a simple binary choice between right and wrong.

    In context

    Sociologists argue that viewing gender as a strict binary fails to account for the diverse experiences of many individuals.

    either ordualistic
  4. 04 C1 Advanced Academic

    n.a way of looking at something as having only two opposite parts.

    n.a situation or system in which there are only two possible states or distinct parts.

    Simple

    We need to move beyond the binary of 'us versus them' to find a solution.

    In context

    The traditional binary of nature versus nurture is increasingly seen as an oversimplification of human development.

  5. 05 C1 Advanced Technical Computing

    n.a type of computer file that is not just plain text.

    n.an executable program or a data file stored in a format that is not human-readable text.

    Simple

    You need to download the binary for the software before you can install it.

    In context

    The developer uploaded the compiled binaries to the server, ensuring they were compatible with various operating systems.

    text file

It often gets reduced to a binary: a social media ban or nothing.

The Guardian· 16 Jul 2026

From Late Latin bīnārius (“consisting of two”), from Latin bīnī (“two-by-two, pair”). By surface analysis, bin- + -ary.

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

This entry
Origin Latin bīnī
Level B2 · Upper Intermediate
Frequency Frequent
Updated