remerge1
/ˌriːˈməːdʒ/rare
verb
[no object] = re-emerge.
Origin
Early 19th century; earliest use found in The Monthly Magazine and British Register. Variant of re-emerge.
remerge2
/ˌriːˈməːdʒ/verb
[no object] To merge again. Frequently with into (also in, with). Also with object: to cause to merge again.
Origin
Mid 19th century; earliest use found in Alfred Tennyson (1809–1892), poet. From re- + merge.