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Suture (anatomy), a rigid joint between hard parts of animals •
Suture (joint), concerning the major joints in the bones of the cranium •
Ammonitic suture, the intersection of the septum with the outer shell in ammonites •
Facial suture (trilobite), divisions in the cephalon (head) of most trilobites, along which the exoskeleton splits during molting •
Surgical suture, a stitch used by doctors and surgeons to hold tissue together ==Science==