365bet中国官方网站

  • word of the day

    great circle

    great circle - 365bet中国官方网站 definition and meaning for word great circle

    Definition
    (noun) a circular line on the surface of a sphere formed by intersecting it with a plane passing through the center

  • Word used in video below:
    text: who gave it to your great-great-great-great grandma.
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