What does endomorphic mean?
Endomorphic is an adjective describing the rounded, soft, heavy-set body type known as an endomorph — one of three somatotypes proposed by psychologist William H. Sheldon in the 1940s, alongside the lean ectomorphic and muscular mesomorphic types. Someone described as endomorphic typically carries more body fat, with a broader torso and smoother contours, and may gain weight readily. The word also appears in geology, where it denotes a mineral crystal whose interior differs in composition from its exterior. Derived from the Greek roots "endo-" (within) and "morphē" (form), it remains largely technical vocabulary, encountered most often in fitness, anthropology, and older psychological literature. Because Sheldon's typology has fallen out of scientific favor, the term today tends to sound somewhat dated or specialized, though it persists in casual discussions of body types.
adjectiveRelating to or characteristic of an endomorph, a body type in Sheldon's classification marked by a soft, rounded build and a tendency to accumulate fat; in geology, describing a mineral whose interior has a composition differing from its exterior.
- Of a person's physique: having the rounded, soft-bodied build characteristic of an endomorph in somatotyping.
- (Geology) Of a mineral crystal: having an interior portion of different composition from its outer part.
"His endomorphic build made him a natural fit for the shot put rather than the marathon."
"Somatotypists classified him as predominantly endomorphic, with a broad torso and a tendency toward weight gain."
"The crystal proved to be endomorphic, with a core of one mineral enclosed by another."
"Endomorphic" comes from Greek roots meaning "inside" and "shape" — literally, a form defined by what's within.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of endomorphic
Endomorphic derives from the Greek elements "endo-", meaning "within", and "morphē", meaning "form" or "shape", combined with the adjectival suffix "-ic". It was coined as the adjective form of "endomorph", the term introduced by American psychologist William Herbert Sheldon in his 1940 work on constitutional psychology, which classified human physiques into three somatotypes. The same "endo-" prefix appears across scientific English in words such as endoderm, endocrine, and endoskeleton.
Related word forms
How endomorphic is actually used
Chiefly used in technical contexts — psychology and physical anthropology (somatotyping), fitness writing, and mineralogy. Outside these fields it is rare and may sound clinical or dated, since Sheldon's body-type system is no longer widely accepted scientifically.
Easily confused with endomorphic
Ectomorphic describes the lean, slender body type that is the opposite of the rounded, soft endomorphic build.
Endothermic refers to processes that absorb heat, while endomorphic relates to body type or mineral structure.