The Collaborative International Dictionary
Dissolvingly
Dissolving \Dis*solv"ing\, a. Melting; breaking up; vanishing. -- Dis*solv"ing*ly, adv.
Dissolving view, a picture which grows dim and is gradually replaced by another on the same field; -- an effect produced by magic lanterns.
Wiktionary
dissolvingly
adv. So as to dissolve or disappear gradually.