IPA: /nɒnˈɡroʊɪŋ/
KK: /nɑnˈɡroʊɪŋ/
Not related to the process of increasing in size or developing.
The nongrowing plant species can survive in harsh conditions without expanding.
Nongrowing is formed from "non-" (meaning not) and "growing" (from the root "grow", which comes from Old English "growan", meaning to increase or develop). The word "nongrowing" means not increasing or developing.
Think of 'non-' meaning not, and 'growing' referring to increasing or developing. So, nongrowing describes something that is not increasing.