massive astronomical compact halo object
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English
[edit]Etymology
[edit]A backformation from MACHO, where the "A" originally was the second letter in the word "massive", in "MAssive Compact Halo Object", to provide a separate word to fill in the "A" in the acronym, using "astronomical"
Noun
[edit]massive astronomical compact halo object (plural massive astronomical compact halo objects)
- Alternative form of massive compact halo object