1. containing or relating to arsenic

1. a compound or preparation containing arsenic, especially one used as a pesticide or medicine
Usage: technical

Examples

• The old paint contained arsenical compounds that made it toxic.
• Farmers once used arsenical pesticides to control insects.
• The laboratory detected arsenical residues in the soil samples.
• Historical records show arsenical medicines were used to treat certain diseases.
• The arsenical was banned due to its harmful effects on human health.
• Scientists studied the arsenical contamination in the groundwater.