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REFERENCE

apex

n.
US //ˈeɪˌpɛks// UK //ˈeɪpɛks// apex
  1. 1 highest physical point (n.)
    C1 Advanced Formal

    the top or highest part of something, especially when it forms a point.

    the vertex or highest point of a physical structure, such as a mountain, building, or geometric shape.

    Example

    The climbers finally reached the apex of the mountain just before noon.

    Example

    The architect designed the roof so that its apex would align perfectly with the position of the North Star during the winter solstice.

    Usage

    Often used with 'of' to describe the top of a specific structure.

  2. 2 highest level of success (n.)
    C1 Advanced Formal

    the most successful or powerful part of a career, life, or story.

    the figurative peak or climax of a career, historical period, or developmental process.

    Example

    Winning the world championship was the apex of her sporting career.

    Example

    Historians often debate whether the empire reached its apex during the third century or if its decline had already begun by then.

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  1. 3 top of a hierarchy (n.)
    C1 Advanced Technical Academic Science

    the highest level of a system, such as the top of the food chain.

    the highest position in a hierarchical system or ecological structure.

    Example

    As an apex predator, the lion has no natural enemies in the wild.

    Example

    The study examines how the removal of an apex predator can cause a collapse in the lower levels of the local ecosystem.

    Usage

    Frequently used as a modifier in the phrase 'apex predator'.

  2. 4 racing line (n.)
    C2 Proficiency Technical Sport

    the point in a corner where a racing car is closest to the inside edge.

    the point in a curve or corner where a vehicle is closest to the inside edge of the track, allowing for maximum speed.

    Example

    The driver missed the apex of the turn and lost several seconds.

    Example

    Mastering the ability to hit the apex consistently is what separates professional racing drivers from amateurs on this technical circuit.

    • clipping point
Origin

Borrowed from Latin apex (“point, tip, summit”).

Idioms1 entry

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