overgrowth
noun
over·growth
| \ ˈō-vər-ˌgrōth
\
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Medical Definition of overgrowth
1a
: excessive growth or increase in numbers
an overgrowth of bacteria…may achieve pathogenic proportions — Journal of the American Medical Association an overgrowth of yeast in the mouth
b
: hypertrophy, hyperplasia
2
: something (as cells or tissue) grown over something else