#inion  the craniometric point that is the most prominent point at the back of the head (at the occipital protuberance)
  supertype:  #craniometric_point  a landmark on the skull from which craniometric measurements can be taken
  part of:  #occipital_bone__occipitalbone  a saucer-shaped membrane bone that forms the back of the skull
     part of:  #cranium__braincase__brainpan  the part of the skull that encloses the brain
        part of:  #skull  the bony skeleton of the head of vertebrates
           part of:  #head__caput  the upper or front part of the body in animals; contains the face and brains; "he stuck his head out the window"
              part of:  #animal__animate_being__animatebeing__beast__brute__creature__fauna  a living organism characterized by voluntary movement
           part of:  #axial_skeleton__axialskeleton  the part of the skeleton that includes the skull and spinal column and sternum and ribs
              part of:  #endoskeleton  the internal skeleton; bony and cartilaginous structure (especially of vertebrates)

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