Tagmergers

fossil group

fossil group  n.— «All that dark matter makes astronomers think that NGC 1132 grew up through the mergers of many smaller galaxies in an entire group, drawn in by the dark matter. That’s why the galaxy is sometimes called a “fossil...

supermajor

supermajor  n.— «Only 10 years after “supermajor” entered the oil industry’s lexicon, the term is already showing its age. At the end of 2000, once the oil industry’s mega-mergers were completed, the combined market capitalisation of...