Toxicodendron

Origin

From the genus name.

Full definition of toxicodendron

Noun

1. Any of the plants in the genus Toxicodendron, including poison ivy, poison oak, etc.
• 2004, Donald G. Crosby, The Poisoned Weed: Plants Toxic to Skin, Those from the various toxicodendrons are similar or identical to one another, irrespective of species, and are referred to as urushiol or laccol, depending on chemical structure.