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leadwort , plumbago †yellow and red oxides of lead XVII; black lead, graphite XVIII: genus of plants, leadwort XVIII. — L. plumbāgō (i) lead ore, (ii) leadwort,… Lead , Lead Lead is in column IVA of the periodic table . It has four naturally occurring stable isotopes, lead-204, lead-206, lead-207, and lead-208. The l… Lead Poisoning , Lead is an indestructible heavy metal that can accumulate and linger in the body. Although the problem of lead exposure has been reduced in the Unite… leading , leading •scaffolding •freestanding, hardstanding, landing, misunderstanding, notwithstanding, outstanding, standing, stranding, understanding, upstan… Periodic Table of the Elements Lead , lead (symbol Pb) Metallic element of group IV of the periodic table, known from ancient times. Its chief ore is galena (lead sulphide), from which le… Red Lead , red lead • n. a red form of lead oxide used as a pigment.
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