The Collaborative International Dictionary of English v.0.48:

Chondroganoidea \Chon`dro*ga*noi"de*a\, n. [NL., fr. Gr.
   cho`ndros cartilage + NL. ganoidei. See Ganoid.] (Zool.)
   An order of ganoid fishes, including the sturgeons; -- so
   called on account of their cartilaginous skeleton.
   [1913 Webster]