adjective
Definition: Relating to or containing a chemical element that is a toxic metalloid, often used in pesticides and semiconductors.
Example: The arsenic compound was used in the experiment to test its effects on plant growth.
noun
Definition: A toxic metallic element that can exist in different forms, commonly used in pesticides and some alloys. It is known for its harmful effects on health.
Example: The use of arsenic in agriculture has raised concerns about its impact on the environment and human health.