noun. any membranous gap between the bones of the cranium in an infant or fetus.
- sphenoidal fontanelle
- sphenoid fontanel
- soft spot
- sphenoidal fontanel
- child's body
- anterior fontanelle
- sphenoid fontanelle
- natural object
- fontenelle (Old French (842-ca. 1400))
Example sentences of the word fontanelle
1. Noun, singular or mass
Another of the soldier's defense mechanism is a sticky white substance excreted from the fontanelle -- a pore on the its head -- which gums up intruders and prevents their entry into the nest.
2. Verb, past tense
There is an especially noticeable soft spot -- a large suture -- at the top of a baby's skull, known as the *fontanelle*.