1557 Robert Recorde, The Whetstone of Witte, p150
[symbols] As the ſigne of a ſquare of ſquares, or Zenzizenzike.
1701 Samuel Jeake, A compleat body of arithmetic, in four books, printed for T. Newborough, p199-203, 684
Take the Zenzizenzike Number of the last Quotient Figure, and with the 3 numbers last above-mentioned, add them (duely placed one nearer than another to the Right Hand) into one total Gnonom, and subtract the same from the given Number : And if the number have more Pricks than 2, the work in the second, third, fourth and fifth Directions is to be repeated. [p200]
1908 Benchara Bronford, A Study of Mathematical Education: Including the Teaching of Arithmetic, MA Oxford Press, p258 (spelled "zenzizenzike")
1965, Dmitri A. Borgmann, Language on Vacation: An Olio of Orthographical Oddities, page 253:
While this is the least accurate of the four approximations discussed here, it has the charm that the numerator is the zenzizenzic of 4 […]
Like this one, ; , most of the math functions for heat flow are zenzizenzic, and therefore difficult enough to understand, so it is easy to mislead consumers into throwing more money at home improvement projects.
1557 Robert Recorde, The Whetstone of Witte, p151
[symbols] Doeth repreſent a ſquare of ſquares ſquaredly, or a zenzizenzizenzike.
1701 Samuel Jeake, A compleat body of arithmetic, in four books, printed for T. Newborough, p198
And ſo for the Zenzizenzizenzikes, or of greater Quantity, it is but to reiterate the Zenzick Extraction. As to know the Zenzizenzizenzike Root of 16983563041, I firſt extract the Square Root, which is 130321, and then the Square Root of that, which is 361, and alſo the Square Root thereof, and ſo take 19 for the Root deſired.
1866 Charles Knight, The English Cyclopaedia: a new dictionary of Universal Knowledge, p1045
From this and the word cube, various denominations of powers were formed, as zenzi-cubic for sixth, zenzizenzizenzic for eighth, &c., from which we are now happily delivered.
2008 Jason Earls, Heartless Bastard In Ecstasy, p64
He loved calculators more than he cared to admit. He would punch a few buttons and quickly determine that 88 + 43 = 16777259 is prime and zenzizenzizenzic, for example, followed by 8888 + 7 = 386637279427098990084103, also prime and zenzizenzizenzic.
2008 Jack Uldrich, Jump the Curve: 50 Essential Strategies to Help Your Company Stay Ahead of Emerging Technologies, page 21:
Assuming DNA sequencing continues to double in length every ten months, if one applies a little zenzizenzizenzic to the equation […]