"Dissolve" is a verb that means to cause something to disappear or break up into smaller parts. The phrase "dissolve a partnership" means to end a business partnership or relationship. In Engpsh, you could say "We have decided to dissolve our partnership" to mean that you are ending a business partnership with someone. If you are referring to a marriage or personal relationship, you could say "We have decided to dissolve our marriage" to mean that you are ending the relationship.