cricothyroid UK /ˌkɹʌɪ.kə(ʊ)ˈθʌɪ.ɹɔɪd/US /ˌkɹaɪ.koʊˈθaɪˌɹɔɪd/adjective 1noun 1forms 1 adjective1 •Of or pertaining both to the cricoid and the thyroid cartilages. noun1 •Clipping of cricothyroid muscle. formscricothyroids