zoocaulonhttp://www.oed.com/dictionary/zoocaulon_n%3Ftab%3Dmeaning_and_usezoocaulon, n.
Revised 2017

zoocaulonnoun

Now rare.
  1. 1881–
    The branched supporting stalk of certain colonial protists; cf. zoodendrium n.
    1. 1881–2
      Zoocaulon..title conferred by the author on the erect tentaculiferous branching colony-stocks of the genus Dendrosoma.
      W. Saville-Kent, Manual of Infusoria vol. II. 874
    2. 1963
      Zoocaulon, zoodendrium.
      I. F. Henderson & W. D. Henderson, Dictionary of Biological Terms (ed. 8) 635/2

Originally published as part of the entry for zoo-, comb. form

zoo-, comb. form was revised in June 2017.