SynonymDefinitionAntonym.com - English Synonym Dictionary

A car that has top that can be folded or removed

A sofa that can be converted into a bed

A corporate security (usually bonds or preferred stock) that can be exchanged for another form of security (usually common stock)

Capable of being exchanged for or replaced by something of equal value

Designed to be changed from one use or form to another

Capable of being changed in substance as if by alchemy