Massive-astrophysical-compact-halo-object meaning

(astronomy, physics) Alternative form of massive compact halo object.
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Origin of massive-astrophysical-compact-halo-object

  • A back-formation from MACHO, which is used as an acronym for massive compact halo object. Words used to fill in the apparently missing "A" word include astrophysical and astronomical.
    From Wiktionary