Webster’s Revised Unabridged Dictionary · 1913
Cycloidian
Cy·cloid′i·an (s?-kloid′?-an), a. & n. (Zoöl.) Same as 2d and 3d Cycloid.
Webster’s Revised Unabridged Dictionary · 1913
Cy·cloid′i·an (s?-kloid′?-an), a. & n. (Zoöl.) Same as 2d and 3d Cycloid.