supergrowth

noun2

1. •
   Very rapid growth.

   • In 1950-73, Japan had supergrowth, with per capita income rising over 8 per cent a year compared with the 2.6 per cent for resurgent Asia. — 2007
2. •
   A growth upon something else.

   • The latter is an excision of organic parts; the former, a removal of supergrowths that impede vital action. — 1897