"improved" in the verb sense
1. better, improve, amend, ameliorate, meliorate
to make better
"The editor improved the manuscript with his changes"
2. better, improve, ameliorate, meliorate
get better
"The weather improved toward evening"
"improved" in the adjective sense
1. improved
made more desirable or valuable or profitable especially made ready for use or marketing
"new houses are springing up on an improved tract of land near the river"
"an improved breed"
2. improved
become or made better in quality
"was proud of his improved grades"
"an improved viewfinder"
3. improved
of land) made ready for development or agriculture by clearing of trees and brush
"improved farmlands"
Source: WordNet® (An amazing lexical database of English)
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