Lead

Definition

Lead is a heavy metal that is naturally occurring in the earth's crust. It is toxic to humans and animals when ingested or inhaled, causing damage to the nervous system and other organs.

Related terms

Heavy Metals: These are metallic elements that have a relatively high density compared to water. Like lead, many heavy metals are toxic in certain concentrations.

Toxicity: This refers to the degree to which a substance can harm humans or animals. Lead has high toxicity levels.

Neurotoxin: A type of toxin that specifically damages nerve cells (neurons). Lead is considered a neurotoxin because it affects the nervous system.