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REFERENCE

bilateral

adj. · n.
US //baɪˈɫætɝəɫ// UK //baɪlˈætəɹəl// bi·lat·er·al
  1. 1 between two groups (adj.)
    C1 Advanced Formal

    involving two groups or countries, especially in an official agreement.

    involving two parties, groups, or nations, typically in a formal or diplomatic context.

    Example

    The two countries signed a bilateral trade agreement to lower taxes on imports.

    Example

    The bilateral negotiations stalled when neither delegation was willing to compromise on the sensitive issue of maritime borders.

    Usage

    Commonly used in political and legal contexts to describe treaties or talks.

  2. 2 having two sides (adj.)
    C1 Advanced Technical Science

    having two sides or parts that are the same.

    relating to or having two sides; specifically having symmetry where the left and right sides are mirror images.

    Example

    Most animals, including humans, have bilateral symmetry.

    Example

    The biologist noted that the specimen exhibited perfect bilateral symmetry, with identical markings on both the left and right wings.

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  1. 3 family descent (adj.)
    C2 Proficiency Academic Technical

    tracing your family history through both your mother's and father's side.

    relating to a system of kinship where descent is traced through both the maternal and paternal lines.

    Example

    In many modern societies, people follow a bilateral system of family history.

    Example

    The researcher argued that bilateral descent patterns provided a more flexible social structure than strictly patrilineal systems.

    • unilineal
  2. 4 a meeting (n.)
    C1 Advanced Formal

    a formal meeting between two people or groups.

    a formal discussion or meeting held between two parties, especially in diplomacy.

    Example

    The president held a bilateral with the prime minister before the main summit.

    Example

    Following the general assembly, the two leaders retired to a private room for a bilateral to discuss regional security.

Origin

From bi- + lateral.

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