1. of or relating to theriaca, an ancient medicinal compound used as an antidote to poison
Usage: archaic; medical history

Examples

• The theriacal preparations were highly valued in medieval medicine.
• Ancient physicians prescribed theriacal remedies for snake bites.
• The theriacal compound contained dozens of different ingredients.
• Medieval apothecaries kept theriacal mixtures in their shops.
• The theriacal antidote was believed to cure all poisons.