The Collaborative International Dictionary
cylindricity
cylindricity \cyl*`in*dric"i*ty\ (s?l`?n-dr?s"?-t?), n. The quality or condition of being cylindrical.
Wiktionary
cylindricity
n. 1 (context uncountable English) The quality of being cylindrical. 2 (context countable English) A three-dimensional geometric tolerance that controls how much a feature can deviate from a perfect cylinder.