from
The Collaborative International Dictionary of English v.0.48
Improvable \Im*prov"a*ble\, a. [From {Improve}.]
1. Capable of being improved; susceptible of improvement;
admitting of being made better; capable of cultivation, or
of being advanced in good qualities.
[1913 Webster]
Man is accommodated with moral principles,
improvable by the exercise of his faculties. --Sir
M. Hale.
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I have a fine spread of improvable lands. --Addison.
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2. Capable of being used to advantage; profitable;
serviceable; advantageous.
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The essays of weaker heads afford improvable hints
to better. --Sir T.
Browne.
-- {Im*pro"a*ble*ness}, n. -- {Im*prov"a*bly}, adv.
[1913 Webster]