noun🔗ShareFontanelleA soft membraneous spot on the head of a baby due to incomplete fusion of the cranial bones."The doctor gently pressed the baby's fontanelle to check for dehydration. "Le médecin a doucement appuyé sur la fontanelle du bébé pour vérifier la déshydratation.anatomybodymedicinephysiologyChat with AIVocabulary GamePractice Reading