Yes, the word "trauma" does have a root word. The root word is "trau-" or "traumat-," which comes from the Greek word "trauma" (τραῦμα), meaning "wound" or "injury." The term "trauma" is commonly used in medical contexts to refer to a physical injury or wound caused by an external force. Over time, its usage has expanded to include psychological trauma, which refers to emotional or psychological distress resulting from distressing events or experiences. The root "trau-" or "traumat-" forms the basis for words like "traumatic," "traumatize," and "traumatology," among others.