We don't have synonyms for histogeny yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are dissogeny, histogen and histogenic.
(n) :
(historical, biology, theory of recapitulation, rare) The study of the evolution of the forms of biological cells and tissues by observing the supposed ontogenic recapitulation of that phylogeny.
(n) :
(historical, biology, theory of recapitulation, rare) The study of the evolution of the forms of biological cells and tissues by observing the supposed ontogenic recapitulation of that phylogeny.