being an essential part of something 必需的；不可或缺的 - [usually before noun]
included as part of something, rather than supplied separately 作为组成部分的 The unit comes complete with integral pump and heater. 此设备是完整的, 包括其组成部分的泵及加热装置。
- [usually before noun]
having all the parts that are necessary for something to be complete 完整的；完备的 an integral system 完整的系统
Word Originmid 16th cent.: from late Latin integralis, from integer ‘whole’, from in- (expressing negation) + the root of tangere ‘to touch’. Compare with integrate and integrity.