Home › Words › N › nitrochalknitrochalknitrochalk means A fertilizer consisting of a mixture of ammonium nitrate and chalk.Among words judged in Lexicurio's Arena, nitrochalk ranks #31,661 of 42,749 for Qualifying.EtymologyFrom nitro- + chalk.nounA fertilizer consisting of a mixture of ammonium nitrate and chalk.Definitions & examples from Wiktionary (CC BY-SA 3.0).