pyknic

[pik-nik] /ˈpɪk nɪk/
adjective
1.
(of a physical type) having a fat, rounded build or body structure.
Compare asthenic (def 2), athletic (def 5).
noun
2.
a person of the pyknic type.
Origin
1920-25; < Greek pykn(ós) thick + -ic
British Dictionary definitions for pyknic

pyknic

/ˈpɪknɪk/
adjective
1.
(of a physical type) characterized by a broad squat fleshy physique with a large chest and abdomen
Word Origin
C20: from Greek puknos thick
pyknic in Medicine

pyknic pyk·nic (pĭk'nĭk)
adj.
Having a short, stocky physique.