1 tr. & intr. (often foll. by with) a combine or be combined. b join or blend gradually.
2 intr. & tr. (foll. by in) lose or cause to lose character and identity in (something else).
3 tr. (foll. by in) embody (a title or estate) in (a larger one).
Derivatives:
mergence n.
Etymology: L mergere mers- dip, plunge, partly through legal AF merger
Useful english dictionary. 2012.