Hel"i*cal*ly

from The Collaborative International Dictionary of English v.0.48

Helical \Hel"i*cal\, a. [From {Helix}.]
   Of or pertaining to, or in the form of, a helix; spiral; as,
   a helical staircase; a helical spring. -- {Hel"i*cal*ly},
   adv.
   [1913 Webster]