The Collaborative International Dictionary of English v.0.48:

Radiale \Ra`di*a"le\ (r[=a]`d[i^]*[=a]"l[-e]), n.; pl.
   Radialia (r[=a]`d[i^]*[=a]"l[i^]*[.a]). [NL. See Radial.]
   1. (Anat.) The bone or cartilage of the carpus which
      articulates with the radius and corresponds to the
      scaphoid bone in man.
      [1913 Webster]

   2. pl. (Zool.) Radial plates in the calyx of a crinoid.
      [1913 Webster]