Which term describes a normal head size and shape, without evidence of trauma?

The term that describes a normal head size and shape, without evidence of trauma, is "atraumatic/normocephalic." This terminology is commonly used in medical examinations to indicate that the head is of a normal size and shape (normocephalic) and that there are no signs of trauma or injury (atraumatic).

This term is essential in clinical assessments, as it helps healthcare providers document and communicate findings regarding a patient’s head, especially in cases where neurological conditions or skull injuries are being evaluated. A normal head shape is crucial for normal brain development and function, making this identification significant in pediatric and adult assessments alike.

In contrast, terms like "transitional" do not specifically refer to head shape or trauma, and "deformed" suggests an abnormality or malformation, while "microcephalic" indicates a condition where the head is significantly smaller than normal, which is clearly not applicable to a situation describing a normal head size and shape.