Home/ectostosisectostosis/ek-to-stoh-sis, -tuh-/US // ˌɛk tɒˈstoʊ sɪs, -tə- //异位症,外翻症,外口症,外翻Definitionsn.名词 noun1: the ossification of cartilage that begins under the perichondrium and proceeds inward.Level 3Browse all words →