zonulehttp://www.oed.com/dictionary/zonule_n%3Ftab%3Dmeaning_and_usezonule, n.
First published 1921; not fully revised

zonulenoun

Anatomy.
  1. 1.
    1828–
    A little zone: applied spec. to the ring-shaped fibrous structure which forms the suspensory ligament of the crystalline lens (zonule of Zinn).
    1. 1828
      The author has omitted to describe the zonule of Zinn, or rather,..he has totally mistaken the connection between the coloured and colourless parts of the eye.
      R. Knox, translation of H. Cloquet, System of Human Anatomy 552
    2. 1854
      The zonula is a thin transparent..membrane, stretching from the ora serrata retinæ as far as the border of the lens.
      Kölliker, Hum. Histology 390
    3. 1873
      The zonula-fibres arise from the substance of the vitreous behind the ora serrata.
      H. Power, translation of Stricker's Manual Histology vol. III. 354
  2. 2.
    1928–
    Geology. (See quot. 1928.)
    1. 1928
      We have discussed the need for some term to designate the rocks bearing a faunule with several stratigraphers. In the course of one conversation Dr. Weller suggested ‘zonule’, and it has been approved by others... We propose the term, therefore, with the following definition: A zonule is the stratum or strata which contain a faunule, its thickness and area being limited by the vertical and horizontal range of that faunule.
      C. L. Fenton & M. A. Fenton in American Naturalist vol. 11 21
    2. 1958
      A zonule is a biostratigraphic unit that is recognizable in a sedimentary basin or similar restricted area of sedimentation.
      Bulletin of Geological Society of America vol. 69 113/1
    3. 1976
      The assemblage can be referred to the middle Eocene Proteacidites confragosus Zonule on the basis of the presence of the nominate species.
      BMR Journal Austral. Geol. & Geophysics vol. 1 109

zonule, n. was first published in 1921; not fully revised.

zonule, n. was last modified in December 2024.