Home › Words › T › taconitetaconitetaconite means A low-grade flint-like iron ore containing 20-30% iron.Among words judged in Lexicurio's Arena, taconite ranks #36,218 of 42,789 for Qualifying.EtymologyFrom Taconic + -ite, after the Taconic Mountains. The name Taconic is from a Lenape language.nounA low-grade flint-like iron ore containing 20-30% iron.Definitions & examples from Wiktionary (CC BY-SA 3.0).