Dispersion

[Sarah]

The separation of light into its different colored rays,arising from their different refrangibilities. Dispersion of theoptic axes (Crystallog.), the separation of the optic axes in biaxialcrystals, due to the fact that the axial angle has different valuesfor the different colors of the spectrum.

[Tina]

In [polyamory], [dispersion] is any benevolent, non-jealous, relieved, or contented feeling toward the other partners of your own partner, because your partners time spent with them gives you and your partner time apart, which introverts need to feel comfortable. It was coined to provide a more specific variety of [compersion], benevolent and non-jealous feeling toward ones [metamour] (your own partners partner). If compersion is being happy to share your partner with somebody else, because it makes them both happy, then dispersion is being happy that your partner is spending time with somebody else, away from you, because it lets you have space and solitude.
[Dispersion] was coined to be used in this way by [redditor] /u/TooShortToBeStarbuck, on 17 March 2016, in the /r/polyamory subreddit.
Quoting from the reddit post in question:
Comperson has been retroactively justified as comperage person compassion, or some combination thereof.
Why not dispersion? Yes, its an actual word, but it both works in a literal sense and in a morphological sense. The action or process of distributing things or people over a wide area. Dispersing ones emotional, social, and other relationship needs across multiple partners allows any one partner to avoid [shouldering] too much [social burden].
The com in compassion is with. The dis in dispassion is apart. The compersion you feel, as a result of being able to get away from each other, is dispersion.

[Julene]

The action or process of distributing things or people over a wide area.

[Mary Mallozziberg]

Dispersion is the [Seperation] of [white light] into its 7 different coloured lights due to the change in speed of the coloured lights when they cross the boundary between two mediums of different [optical] density causing each light to bend at a slightly different angle