EXTMn.扩充远程通信模块EXTabbr.扩展（=extension）abbr.外面的；外部的（=exterior）abbr.额外的（=extra）extensor coccygis[医] 骶尾后肌extemporize vi.即兴创作；extrocardiography心电图法extopic pregnancy子宫外孕, 异位妊娠extromotive force外动力extremal function极值函数Extemal treatment外治法Extruding Process挤出工艺Extremal question最值问题extensible syntax可扩充的语法