What does "demerge" mean?

To separate companies that were formerly combined; to reverse a merger.

Demerge

verb

verb ·Rare ·Advanced level

Verb

1
To separate companies that were formerly combined; to reverse a merger.
2
To plunge down into; to sink; to immerse. obsolete
"The water in which it was demerged. — Boyle."

"The water in which it was demerged. — Boyle."

Etymology 1

From de- + merge.

Etymology 2

Latin demergo (“I submerge”).