Wiktionary
fastgrowing
a. Growing rapidly
Usage examples of "fastgrowing".
Gardes Françaises no longer, they are re-named Gardes Nationales, and enrolled in the fastgrowing Paris Militia, which is like to number forty eight thousand soon, and by to-morrow nearer one hundred thousand.
It was in the pines, the management of Carlson Publishing Company being strongly convinced that it was just a matter of time before chemists came up with a means of using fastgrowing loblolly pine for newsprint.