A section of the inner segment of a retinal rod or cone, which in certain vertebrates can contract and elongate in response to changes in light levels.
Of, relating to, or designating the myoid of a retinal cone or rod.
Early 20th century; earliest use found in The Lancet. From myo- + -oid, after French myoïde, noun.
Composed of, resembling, characteristic of, or involving muscle tissue or cells.
Mid 19th century; earliest use found in Robley Dunglison (1798–1869), physician and medical writer. From myo- + -oid. Compare Hellenistic Greek μυώδης muscular (also ‘mouse-like’), and French myoïde, adjective.