IPA: /ˈsuːpərˌstɔːr/
KK: /ˈsuːpərˌstɔːr/
A large retail shop that sells a wide range of products, including food, clothing, and household items, all in one place.
I went to the superstore to buy groceries and some new clothes.
Superstore → It is formed from "super-" (meaning above or over) and "store" (from Old French *estorer*, meaning to place or store). The word "superstore" refers to a large store that offers a wide variety of goods, essentially a store that is above the usual size and selection.
Think of a store that is 'above' ('super-') the regular size and selection — that's what makes it a superstore.