IPA: /nɒnˈrɪzɪstənt/
KK: /nɑnˈrɪzɪstənt/
Not able to withstand or resist something, especially a disease or harmful condition.
The nonresistant plants struggled to survive in the harsh climate.
Nonresistant → It is formed from "non-" (meaning not) and "resistant" (from Latin "resistens", meaning standing firm or opposing). The word "nonresistant" means not standing firm against something or not opposing it.
Think of 'not' ('non-') being combined with 'standing firm' ('resistens') — that's why nonresistant means not opposing or yielding.