D defs.my
Entry 2 senses Webster, 1913

Convertible

/kən-vẽrt'-əb-əl/ · Con·vert·i·ble · IPA /kənˈvɝtɪbl̩/
01 a. Capable of being converted; susceptible of change; transmutable; transformable.
  1. 1.
    Capable of being converted; susceptible of change; transmutable; transformable.
    “Minerals are not convertible into another species, though of the same genus.” — Harvey.
  2. 2.
    Capable of being exchanged or interchanged; reciprocal; interchangeable.
    “So long as we are in the regions of nature, miraculous and improbable, miraculous and incredible, may be allowed to remain convertible terms.” Trench.