Lead Definition & Meaning - Merriam-Webster
Web1. a. : to guide on a way especially by going in advance. led the officers to his hiding place. b. : to direct on a course or in a direction. a road leading the traveler to the heart of the …
Lead - Wikipedia
WebLead is a chemical element; it has symbol Pb (from Latin plumbum) and atomic number 82. It is a heavy metal that is denser than most common materials. Lead is soft and malleable, and also has a relatively low melting point. When …
Lead poisoning - World Health Organization (WHO)
WebAug 11, 2023 · Overview. Lead is a naturally occurring toxic metal found in the Earth’s crust. Its widespread use has resulted in extensive environmental contamination, human exposure and significant public health problems in many parts of the world.
Lead | Definition, Uses, Properties, & Facts | Britannica
WebMar 1, 2024 · Lead, a soft, silvery white or grayish metal in Group 14 (IVa) of the periodic table. Lead is very malleable, ductile, and dense and is a poor conductor of electricity. Known in antiquity and believed by the alchemists to be the oldest of metals, lead is highly durable and resistant to corrosion.
Lead poisoning - Symptoms & causes - Mayo Clinic
WebJan 21, 2022 · Lead poisoning occurs when lead builds up in the body, often over months or years. Even small amounts of lead can cause serious health problems. Children younger than 6 years are especially vulnerable to lead poisoning, which can severely affect mental and physical development.
LEAD Definition & Meaning | Dictionary.com
Webto influence or induce; cause: Subsequent events led him to reconsider his position. Synonyms: convince, persuade. to guide in direction, course, action, opinion, etc.; bring: …
Lead - Element information, properties and uses | Periodic Table
WebOrigin of the name. The name comes from the Anglo-Saxon word for the metal, 'lead' Allotropes. Pb. Lead. 82. 207.2. Glossary. GroupA vertical column in the periodic table. Members of a group typically have similar properties and electron configurations in their outer shell. PeriodA horizontal row in the periodic table.
Learn about Lead | US EPA - U.S. Environmental Protection Agency
WebLast updated on February 7, 2024. This page provides basic information on lead including what it is, where it is found, how one can be exposed, and the health effects associated with lead.
LEAD | English meaning - Cambridge Dictionary
WebLEAD definition: 1. to control a group of people, a country, or a situation: 2. (especially in sports or other…. Learn more.
lead summary | Britannica
WebLead is a soft, silvery white or grayish, malleable, ductile, dense metal that conducts electricity poorly. Its stable isotope s are all end products of radioactive decay of uranium and other heavy elements. Known since ancient times, lead is so durable and resistant to corrosion that Roman lead pipes are still usable.
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