Căr-ti-lăg'i-nous, a.

a. [Lat. cartilaginosus, Fr. cartilagineux.]

1. Pertaining to, or resembling, a cartilage; gristly; consisting of cartilage; firm and tough like cartilage.
2. (Ichth.) Having the internal skeleton in the state of cartilage, the bones containing little or no calcareous matter; — said of certain kinds of fish.

Carpenter.