cri·coid cartilage 'krī-.kȯid- n a cartilage of the larynx which articulates with the lower cornua of the thyroid cartilage and with which the arytenoid cartilages articulate called also cricoid
* * *
the cartilage, shaped like a signet ring, that forms part of the anterior and lateral walls and most of the posterior wall of the larynx.
* * *
cartilago cricoidea.Medical dictionary. 2011.