a.1.Having the form of a helix; spiral.
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in periodicals archive ?
Heliciform shell with five to six whorls and, opened and not deep umbilicus, with a semilunar aperture (ARAUJO, 1989), partially covered by the extremity of the columella.