Webster's Revised Unabridged Dictionary · 1913

Treatable

Treatable , adjective

[Old English tretable, French traitable, Latin tractabilis. See Treat, and compare Tractable.]

Manageable; tractable; hence, moderate; not violent. [Obsolete]
A treatable disposition, a strong memory. — R. Parr
A kind of treatable dissolution. — Hooker
The heats or the colds of seasons are less treatable than with us. — Sir W. Temple