ateliosis
noun
ate·li·o·sis
variants:
or chiefly British ateleiosis \ ə-ˌtel-ē-ˈō-səs 
, -ˌtē-lē-
\
, -ˌtē-lē-
\
plural atelioses\ -ˌsēz
\
\
Medical Definition of ateliosis
: incomplete development
especially
: dwarfism associated with anterior pituitary deficiencies and marked by normal proportions