Source : Webster's Revised Unabridged Dictionary (1913)

Tectology \Tec*tol"o*gy\, n. [Gr. ? a carpenter + -logy.]
   (Biol.)
   A division of morphology created by Haeckel; the science of
   organic individuality constituting the purely structural
   portion of morphology, in which the organism is regarded as
   composed of organic individuals of different orders, each
   organ being considered an individual. See {Promorphology},
   and {Morphon}.