ectomorph

Derived from ectoderm +‎ -morph from William Herbert Sheldon.

• (Received Pronunciation) IPA^(key): /ˈɛktəʊmɔːf/
• (US) IPA^(key): /ˈɛktoʊmɔːɹf/, /ˈɛktəmɔːɹf/

• Audio (US)

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ectomorph (plural ectomorphs)

1. Someone with a lean, only slightly muscular body
   • 1990, Robert Klitgaard, Tropical Gangsters: One Man's Experience with Development and Decadence in Deepest Africa

     Also there was a woman I hadn't met, a chain-smoking French ectomorph whose job it was to make sense of records of public spending in the Ministry of Finance.

2. (bodybuilding): Theoretical body type in which a person has a high metabolism. Such a person can easily maintain a low fat physique, but does not add muscle or body weight easily.

A strongly marked example of an ectomorphic body type.

• hard gainer

• ectomorphic
• ectomorphy

• endomorph
• mesomorph