• Enneagon

    Pronunciation

    Origin

    - + gon + -

    Full definition of enneagon

    Noun

    enneagon

    (plural enneagons)
    1. (geometry) A polygon with nine sides; a nonagon.

    Synonyms

    Usage notes

    While enneagon is etymologically consistent with pentagon, hexagon, etc., in that it uses a Greek prefix and suffix as opposed to a Latin prefix and a Greek suffix, its use is rare; nonagon is the more common term.

    Related terms

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