1 (only before a noun 只用于名词前) of or on the inside (of a place, person or object) 内部的: He was rushed to hospital with internal injuries. 他受了内伤，马上被急忙送进医院。

2 happening or existing inside a particular organization 组织内部的: an internal exam (= one arranged and marked inside a particular school or college) 校内考试an internal police inquiry 警方的内部调查

3 (used about political or economic affairs) inside a country; not abroad （指政治或经济事务）国内的: a country's internal affairs/trade/markets 一个国家的内政╱国内贸易╱国内市场an internal flight 国内航班 [OPP] external 反义词为external➔internally /-nəli ||; -nḷɪ/ adv This medicine is not to be taken internally (= not swallowed). 这药不可内服。