convertible

from The American Heritage® Dictionary of the English Language, 5th Edition.

• adjective Capable of being converted.
• adjective Having a top that can be folded back or removed.
• adjective Lawfully exchangeable for gold or another currency.
• noun Something that can be converted.
• noun A convertible automobile.
• noun A convertible security.

from The Century Dictionary.

• Capable of being changed in form, substance, or condition; susceptible of change; transmutable; transformable: as, iron is convertible into steel, and wood into charcoal.
• Capable of being turned into an equivalent by exchange; transformable by mutual transfer: as, bonds or scrip convertible into other securities; convertible property.
• Specifically, in banking and com., capable of being converted or changed into gold of similar amount at any time: applied to bank-notes and other forms of paper money: as, a convertible paper currency.
• Capable of being applied or turned, as to a new use.
• So constituted as to be interchangeable; equivalent in certain or all respects.
• In logic, true, or asserted to be true, after conversion or the interchange of subject and predicate. See conversion, 2.

from the GNU version of the Collaborative International Dictionary of English.

• adjective Capable of being converted; susceptible of change; transmutable; transformable.
• adjective Capable of being exchanged or interchanged; reciprocal; interchangeable.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• adjective Able to be converted
• adjective obsolete Capable of being turned or rotated
• adjective Capable of being exchanged or interchanged, reciprocal, interchangeable
• adjective finance Having the right to be converted into a different security, usually common stock, at the holder's option
• noun A car whose roof can be removed or folded
• noun finance A hybrid security that can be converted into stock
• noun A portable computer that can be physically converted between laptop and tablet configurations.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

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