IPA: /ˌɪl.əˈstreɪ.ʃən.əl/
KK: /ɪlʌsˈtreɪʃənl/
This word describes something that is meant to explain or clarify by providing examples or images.
The teacher used an illustrational diagram to help the students understand the concept better.
Illustrational → It is formed from "illustrate" (from Latin "illustrare", meaning to light up or make clear) and "-ional" (meaning relating to). The word "illustrational" refers to something that relates to making something clear or visually explaining it.
Think of 'illustrate' as making something clear or bright, and '-ional' means relating to that action. So, 'illustrational' is about relating to the act of making things clear.