Know how to use "fewer" and "less"? Find out.
early 15c., from Old French inventoire "inventory, detailed list of goods, catalogue," from Medieval Latin inventorium (Late Latin inventarium) "list of what is found," from Latin inventus, past participle of invenire "to find" (see invention). The verb is first recorded c.1600, from the noun.
An itemized list of a firm's goods that have not yet been sold.