# massive astrophysical compact halo object

> English word · Noun

## Definitions
1. Alternative form of massive compact halo object.

## Etymology
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.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/massive-astrophysical-compact-halo-object