- cartilage, gristle - tough elastic tissue; mostly converted to bone in adults
--1 is a kind of animal tissue
--1 is a substance of cartilaginous structure
--1 has parts: matrix, intercellular substance, ground substance
--1 has substances: collagen
--1 has particulars:meniscus; fibrocartilage; hyaline cartilage; arytenoid, arytaenoid, arytenoid cartilage; thyroid cartilage, Adam's apple