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Webster 1913 Edition

Adj.

Capable of being tuned, or made harmonious; hence, harmonious; musical; tuneful.

–

Tun′a-ble-ness

Noun.

–

Tun′a-bly

adv.

And

tunable

as sylvan pipe or song.

Milton.

Adj.

[from tune.] Harmonious; musical.

And tunable as sylvan pipe or song.

That may be put in tune.

tunable ‎(comparative more tunable, superlative most tunable)

(now rare) Harmonious, melodic, tuneful. [from 16th c.]
- 1624, John Smith, Generall Historie, in Kupperman 1988, p. 147-8:
  Then doe all with a tunable voice of shouting bid him welcome.
- 1723, Charles Walker, Memoirs of Sally Salisabury, I:
  she rather chose to follow the Fortunes of a Wheel-Barrow, than those of a Distaff; daily, charming the Ears of the Publick with the Tuneable and Melodious Cry, of, Come who throws here? Who ventures for an ORANGE?
Able to be tuned. [from 18th c.]