D defs.my
Entry 1 sense Webster, 1913

Tunable

/to͞on'-əb-əl/ · Tun·a·ble · IPA /ˈtjuːnəb(ə)l/
01 a. Capable of being tuned, or made harmonious; hence, harmonious; musical; tuneful.
  1. 1.
    Capable of being tuned, or made harmonious; hence, harmonious; musical; tuneful.
    “And tunable as sylvan pipe or song.” Milton.