"Significant enhancements" refers to substantial improvements or changes that have a considerable impact on something, making it better or more effective. Full definition
For pets experiencing illnesses or injuries, this therapy can offer significant enhancement of treatment, reduce pain, speed recovery time and decrease hospitalization. (tlcvets.com)
The eight - passenger Pilot received significant enhancements in 2006, packing the vehicle inside and out with more technology, convenience and value. (topspeed.com)
Most significant enhancements for 2007: a couple of new colors, and the stereo gets an auxiliary input jack. (articles.orlandosentinel.com)