mesomorphic

UK: /ˌmɛsəʊˈmɔːfɪk/

US: (mez′ə môr′fik, mes′-, mē′zə-, -sə-)

WordReference Random House Unabridged Dictionary of American English © 2026

mes•o•mor•phic  (mez′ə môr′fik, mes′-, mē′zə-, -sə-), adj. 

1. pertaining to or having a muscular or sturdy body build characterized by the relative prominence of structures developed from the embryonic mesoderm (contrasted with ectomorphic, endomorphic).
2. [Physical Chem.] pertaining to or existing in an intermediate state, as a liquid crystal in the nematic or smectic state.

• meso- + -morphic 1920–25

mes′o•mor′phism, n. 
mes′o•mor′phy, n. 

Collins Concise English Dictionary © HarperCollins Publishers::

mesomorphic / ˌmɛsəʊˈmɔːfɪk/ adjective

1. also: mesomorphous existing in or concerned with an intermediate state of matter between a true liquid and a true solid
   See also smectic, nematic
2. relating to or being a mesomorph

ˌmesoˈmorphism noun