Noah Webster's Dictionary 1. (n.) The act of improving; advancement or growth; promotion in desirable qualities; progress toward what is better; melioration; as, the improvement of the mind, of land, roads, etc. 2. (n.) The act of making profitable use or application of anything, or the state of being profitably employed; a turning to good account; practical application, as of a doctrine, principle, or theory, stated in a discourse. 3. (n.) The state of being improved; betterment; advance; also, that which is improved; as, the new edition is an improvement on the old. 4. (n.) Increase; growth; progress; advance. 5. (n.) Valuable additions or betterments, as buildings, clearings, drains, fences, etc., on premises. 6. (n.) A useful addition to, or modification of, a machine, manufacture, or composition.

Multi-Version Concordance Improvement (2 Occurrences) John 4:52 So he inquired of them at what hour he had shown improvement. "Yesterday, about seven o'clock," they replied, "the fever left him." (WEY) 2 Corinthians 13:9 For we rejoice when we are weak and you are strong. And this we also pray for, even your perfecting. (See RSV)