Definition of ectomorphic
1 : 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
2 : characterized by a lean slender body build with slight muscular development
Origin of ectomorphic
ectoderm + -morphic; from the predominance in such types of structures developed from the ectoderm
First Known Use: 1940
Medical Definition of ectomorphic
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Medical Dictionary: Definition of "ectomorphic"
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