an upward grade or slope. INCREASE, RISE. IMPROVEMENT sense 2b. to raise or improve the grade of: such as to improve (livestock) by use of purebred sires - to advance to a job requiring a higher level of skill especially as part of a training program - to raise the quality of - to raise the classification and usually the price of without improving the quality - to extend the usefulness of (something, such as a device) - to assign a less serious status to. to replace something (such as software or an electronic device) with a more useful version or alternative.