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equatorial plane
equatorial plane See equator.equatorial plane[‚e·kwə′tȯr·ē·əl ′plān] (astronomy) The plane passing through the equator of the earth, or of another celestial body, perpendicular to its axis of rotation and equidistant from its poles. (cell and molecular biology) The plane in a cell undergoing mitosis that is midway between the centrosomes and perpendicular to the spindle fibers. (mechanics) A plane perpendicular to the axis of rotation of a rotating body and equidistant from the intersections of this axis with the body's surface, provided that the body is symmetric about the axis of rotation and is symmetric under reflection through this plane. (optics) sagittal plane equatorial plane
e·qua·to·ri·al planein metaphase of mitosis, the plane that touches all of the centromeres and their spindle attachments.e·qua·to·ri·al plane (ek'wă-tōr'ē-ăl plān) In metaphase of mitosis, the plane that touches all the centromeres and their spindle attachments. |