Definition of "improver" [im•prov•er]

• Something that, or someone who, improves (noun)
• A substance added to cause improvement (especially to a foodstuff) (noun)

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• "My favorite society-improver is Compassion International. kujoko at att dot net"
• "The inventive field is large, and each invention opens up a new field for improvements, and it is the "improver," without question, that reaps the greatest benefit from any invention."
• "The motive that shears the trees also razes the copse, in order that the gardener or "improver" may show his art."