[noun] a car that has top that can be folded or removed
[noun] a corporate security (usually bonds or preferred stock) that can be exchanged for another form of security (usually common stock) Synonyms:security
[noun] a sofa that can be converted into a bed Synonyms:sofa bed
[adjective] capable of being exchanged for or replaced by something of equal value; "convertible securities" Synonyms:exchangeable
[adjective] designed to be changed from one use or form to another; "a convertible sofa"; "a convertible coupe"
[adjective] capable of being changed in substance as if by alchemy; "is lead really transmutable into gold?"; "ideas translatable into reality" Synonyms:transformable, translatable, transmutable
