(plural massive astrophysical compact halo objects)
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.
"massive-astrophysical-compact-halo-object." YourDictionary, n.d. Web. 11 December 2018. <https://www.yourdictionary.com/massive-astrophysical-compact-halo-object>.
massive-astrophysical-compact-halo-object. (n.d.). Retrieved December 11th, 2018, from https://www.yourdictionary.com/massive-astrophysical-compact-halo-object
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