Tuneable is an alternative spelling of Tunable. They both have the same definition: Capable of being tuned.

What do you mean by tunable?

1 : capable of being tuned tunable lasers. 2 archaic. a : tuneful. b : sounding in tune : concordant.

Is tunability a word?

Tunability meaning

(uncountable) The state of being tunable. (countable) The extent to which something is tunable.