|Superior view of the calvarium, bregma located at the intersection of the coronal and sagittal sutures.
(Lambda also visible at the intersection of the lambdoid suture by the sagittal suture.)
|Gray's||subject #32 135|
The bregma is known as the anterior fontanelle during infancy. The anterior fontanelle is membranous and closes within 4–26 months of life.
The bregma is often used as a reference point for stereotactic surgery of the brain.
Also, examination of an infant includes palpating the anterior fontanelle. A sunken fontanelle indicates dehydration, whereas a very tense or bulging anterior fontanelle indicates raised intracranial pressure.
Bregma comes from the Greek bregma, meaning top of the head. 
- Liddell & Scott, Greek-English Lexicon