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The hedon (pronounced 'hee-don) and pathon (pronounced 'path-on) are units of measurement.
Hedons and pathons measure the magnitude of pleasure and suffering, respectively.
1.0 hedons, or 1.0 pathons, denotes a sensation of precisely medium magnitude,
in which the sensation is precisely in the middle between "weak" and "strong".
Consequently, hedons and pathons are preferably measured in tenths.
The notation symbol for hedons is a small capital H, or a lowercase hd.
The notation symbol for pathons is a small capital P, or a lowercase pth.