convertible
adjective
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capable of being changed in substance as if by alchemytransformabletranslatabletransmutable
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capable of being exchanged for or replaced by something of equal value“convertible securities”exchangeable
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designed to be changed from one use or form to another“a convertible sofa”
noun
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a car that has top that can be folded or removed
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a sofa that can be converted into a bedsofa bed
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a corporate security (usually bonds or preferred stock) that can be exchanged for another form of security (usually common stock)convertible security