Be careful not to press hard on a newborn's fontanelle.
Tips
usage
囟 appears almost only in 囟门, the gap between an infant's skull bones that lets the head grow before fusing in early childhood.
Components
pictograph
囟xìn
fontanelle
A pictograph drawing the top of an infant's skull with the soft membrane gap shown by the X-like mark inside. The whole character pictures the unjoined crown of a baby's head and does not break into independent parts.
Filed under radical 囗 (wéi, #31) by convention. 囗 is not a separate component in 囟, so no strokes are highlighted.
