a. [ L. cartilaginosus: cf. F. cartilagineux. ] 1. Of or pertaining to cartilage; gristly; firm and tough like cartilage. [ 1913 Webster ]
2. (Zool.) Having the skeleton in the state of cartilage, the bones containing little or no calcareous matter; said of certain fishes, as the sturgeon and the sharks. [ 1913 Webster ]