adj \ˌek-tə-ˈmr-fik\

Definition of ECTOMORPHIC

: of or relating to the component in W. H. Sheldon's classification of body types that measures the body's degree of slenderness, angularity, and fragility
: having a light body build—compare endomorphic 2, mesomorphic 2b
ec·to·mor·phy \ˈek-tə-ˌmr-fē\ noun, plural ec·to·mor·phies

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