Anat. Also in L. form zonula. [ad. mod.L. zōnula, dim. of L. zōna ZONE: see -ULE.] A little zone: applied spec. to the ring-shaped fibrous structure which forms the suspensory ligament of the crystalline lens (zonule of Zinn).
1831. R. Knox, Cloquet’s Anat., 555. These membraneous folds, which collectively are called the zonule of Zinn, are vascular.
1854. Kölliker, Hum. Histol., 390. The zonula is a thin transparent … membrane, stretching from the ora serrata retinæ as far as the border of the lens.
1873. Power, trans. Stricker’s Histol., III. 354. The zonula-fibres arise from the substance of the vitreous behind the ora serrata.
