IPA: /ˈɛksələns/
KK: /ˈɛksələns/
The state or quality of being extremely good or superior in some way.
Her dedication to her studies showed her commitment to excellence.
Excellence → It is formed from "ex-" (meaning out of or from) and "cella" (from Latin "cella", meaning a small room or chamber). The word "excellence" refers to the quality of being outstanding or extremely good, as if one is coming out of a chamber of superior quality.
Think of something that comes 'out of' ('ex-') a 'chamber' ('cella') of high quality — that's how you remember that excellence means being outstanding.