Soft spot – large
Definition of Fontanelles – excessively large
Excessively large fontanelles are larger than expected soft spots for the age of a baby. In an infant, the spaces where the bones of the skull come together, but are not completely joined, are called soft spots or fontanelle (fontanel or fonticulus).
Neil K. Kaneshiro, MD, MHA, Clinical Assistant Professor of Pediatrics, University of Washington School of Medicine. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc. – 11/2/2009