eindexectostosis./ek-to-stoh-sis, -tuh-/US // ˌɛk tɒˈstoʊ sɪs, -tə- //异位症,外翻症,外口症,外翻Definitionsn.noun · 名词1.›the ossification of cartilage that begins under the perichondrium and proceeds inward.Level 3More words in e →