an·ky·lo·sis
noun/ˌæŋkɪˈləʊsɪs/
/ˌæŋkɪˈləʊsɪs/
[uncountable] (medical)- a disease that causes one or more of the joints of the body to join together and become stiff
强直症：一种疾病，可导致身体的一个或多个关节连接在一起并变得僵硬 Word Originearly 18th cent.: from Greek ankulōsis, from ankuloun ‘to crook’, from ankulos ‘crooked’.