outgrowth

noun

1. a natural development, product, or result: to consider truancy an outgrowth of parental neglect.
2. an additional, supplementary result.
3. a growing out or forth.
4. something that grows out; offshoot; excrescence.

noun

1. a thing growing out of a main body
2. a development, result, or consequence
3. the act of growing out

n.1837, from out (adv.) + growth. Figurative sense “natural product” is earlier (1828).