IPA: /nɒn.rɪˈdjuː.sɪŋ/
KK: /nɑnˈriduːsɪŋ/
Describing something that does not decrease or diminish in size, amount, or quality.
The nonreducing sugar does not break down during the reaction.
Nonreducing → It is formed from "non-" (meaning not) and "reducing" (from Latin "reducere", meaning to lead back or bring back). The word "nonreducing" means not leading back or not causing a reduction.
Think of 'not' ('non-') causing something to 'lead back' or 'bring back' ('reducing') — that's why nonreducing means it does not cause a reduction.