The term “Halo” is one of those words whose familiarity and meaning was usurped by the success of a cultural work that shares a name with said word. Indeed, the Halo series seems to be associated with the term rather than its religious namesake.
Despite its image being tied to its science fiction aesthetics and military-centric plotlines, the eponymous Halos are indeed conceptually similar to regular halos that non-fans would be familiar with, especially due to the Covenant's worship of them.
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