antinode

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Related to antinodal: antinodal points

antinode

[′an·tə‚nōd]
(astronomy)
Either of the two points on an orbit where a line in the orbit plane, perpendicular to the line of nodes and passing through the focus, intersects the orbit.
(physics)
A point, line, or surface in a standing-wave system at which some characteristic of the wave has maximum amplitude. Also known as loop.