Home › Words › S › substoresubstoresubstore means A secondary or subsidiary store.Among words judged in Lexicurio's Arena, substore ranks #36,524 of 42,747 for Qualifying.EtymologyFrom sub- + store.nounA secondary or subsidiary store.e.g.“All departments on the Isthmus procure their supplies from either the general store or the substores.” — 1909, Annual Report of the Isthmian Canal Commission, page 228:Definitions & examples from Wiktionary (CC BY-SA 3.0).