arytenoid cartilage ary·te·noid·cartilage uncommon noun 1. either of two small cartilages at the back of the larynx to which the vocal folds are attached Synonymsarytenoidarytaenoidarytenoid cartilage Related words Broader terms cartilage Parts larynx WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.