dark light

Meanings

1. A hypothetical force of nature that acts on dark matter to allow dark matter to interact with itself.

1. Synonym of black light (ultraviolet light)

1. Synonym of eigengrau.

Etymology

Blend of dark matter + light. From being a force found in the dark sector that acts on dark matter, analog to light in the "light sector" (the part of the universe that is not part of the dark sector) that acts on "light matter" (ordinary matter that interacts electromagnetically, thus visibly).