massive and compact halo object

短语

词形变化

massive and compact halo objects 复数

释义与例句

n.
  1. 1.

    Alternative form of massive compact halo object.

词源

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 "and"

来源：wiktionary