Entry 1 sense Webster, 1913 Cricothyroid /(-k?-th?"roid)/ · Cri·co·thy·roid · IPA /ˌkɹaɪ.koʊˈθaɪˌɹɔɪd/ 01 a. Of or pertaining both to the cricoid and the thyroid cartilages. 1. Of or pertaining both to the cricoid and the thyroid cartilages.(Anat.)