Stitches used to close a wound after surgery or injury, or the seams joining bones in the skull.
From Latin 'sutura' meaning seam, derived from 'suere' meaning to sew. The word was borrowed into English via medical terminology in the 1400s.
Your skull bones are held together by sutures that don't fuse completely until adulthood, which is why babies' heads are slightly squishy and can reshape during birth. Doctors literally use the same stitching technique for surgery wounds as tailors use for clothes—it's ancient technology that still works perfectly.
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