vortiginous

vor·tig·i·nous

 (vôr-tĭj′ə-nəs)
adj.
Vortical.

[Blend of vortex and vertiginous.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

vortiginous

(vɔːˈtɪdʒɪnəs)
adj
like a vortex; vortical; whirling
[C17: variant of vertiginous]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014