zenzicubicubehttp://www.oed.com/dictionary/zenzicubicube_n%3Ftab%3Dmeaning_and_usezenzicubicube, n.
First published 2018

† zenzicubicubenoun

Mathematics. rare. Obsolete.
  1. a1690
    The square of the cube of a cubic number; the 18th power of a number.
    1. a1690
      The Number is of the third Composition, as in Zenzicubes, Zenzizenzicubes, Zenzicubicubes, &c.
      S. Jeake, Λογιστικηλογία (1696) 199

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

zenzicubicube, n. was first published in 2018.