The Collaborative International Dictionary of English v.0.48:

Stoichiology \Stoi`chi*ol"o*gy\, n. [Gr. ? a first element +
   -logy.] [Written also stoechiology.]
   1. That part of the science of physiology which treats of the
      elements, or principles, composing animal tissues.
      [1913 Webster]

   2. (Logic) The doctrine of the elementary requisites of mere
      thought. --Sir W. Hamilton.
      [1913 Webster]

   3. The statement or discussion of the first principles of any
      science or art.
      [1913 Webster] Stoichiometric