overgrowth

noun

1. (countable, uncountable)A usually abundant, luxuriant growth over or on something else.
2. (countable, uncountable)A usually abundant, luxuriant growth over or on something else.

   “In desolate places where dank moisture breeds / The pipy Hemlock to strange overgrowth”

3. (countable, uncountable)An excessive growth or increase in numbers, as in a population of weeds or microbes.
4. (countable, uncountable)Excessive size; usually caused by over-production of growth hormone from the pituitary gland.