Source : Webster's Revised Unabridged Dictionary (1913)

Caladium \Ca*la"di*um\, n. [NL.]
   A genus of aroideous plants, of which some species are
   cultivated for their immense leaves (which are often
   curiously blotched with white and red), and others (in
   Polynesia) for food.

Source : WordNet®

caladium
     n : any plant of the genus Caladium cultivated for their
         ornamental foliage variously patterned in white or pink
         or red