megachain
Etymology
From mega- + chain.
megachain means A very large and successful chain (group of stores or businesses). Lexicurio rates it Rare gem — a strength score of 74 out of 100.
noun
- A very large and successful chain (group of stores or businesses).“Independent bookstores, of course, have been under siege for nearly two decades by the megachains and the Web retailers, and have been steadily dropping away, one by one.”