Pronunciation (UK) IPA (key): /ˈɪn.vən.tri/ or /ɪnˈvɛn.tə.ri/ Audio (UK)(file) Audio (UK)(file) Noun Singular inventory Plural inventories (countable) An inventory is a detailed list of items which are available. Update the store inventory – we have run out of lunch meats.Wikiwand - on Seamless Wikipedia browsing. On steroids.Remove ads