WordReference Random House Unabridged Dictionary of American English © 2026
ec•to•mor•phic
(ek′tə môr′fik),USA pronunciation adj.
ec′to•morph′y, n.
- Developmental Biology, Physical Anthropologyhaving a thin body build, roughly characterized by the relative prominence of structures developed from the embryonic ectoderm (contrasted with endomorphic, mesomorphic).
- ecto- + -morphic 1935–40
'ectomorphic' also found in these entries (note: many are not synonyms or translations):