enhancement

noun

1. (countable, uncountable)An improvement or supplement that tends to increase a sense of esteem.

   “The original product, with its simplistic design, has undergone many enhancements over the years.”

   “Dawn mist rolling off the adjacent North Downs creates a sepia effect over the river with no need for digital enhancement.”

2. (countable, uncountable)The degree to which the image of a scan stands out as a bright area.

   “The enhancement characteristics of a PNET on CT may also have prognostic value, as lesions that hypoenhance on CT scan tend to have worse overall survival than lesions that are isoenhancing or hyperenhancing (5-year survival 54% vs 89% vs 93%).”