| Subject | English | Korean |
| comp., MS | dual boot | 이중 부팅 (A computer configuration in which two different operating systems are installed and either can be loaded at start-up) |
| comp., MS | Dual Chinese Search | 중국어 이중 검색 (A search feature that allows a user to query on a word in Simplified Chinese and have results returned for that word and also for the same word in Traditional Chinese, or vice versa) |
| IT | dual control | 이중 통제 |
| comp., MS | dual forking | 이중 Forking (A configuration by which Lync Server or Office Communications Server operates in co-existence with the PBX) |
| comp., MS | dual key | 이중 키 (A type of key that is the combination of a primary key and a join key. You can use dual keys when you add profile attributes in Commerce Server Business Desk) |
| math. | dual process | 쌍대과정 |
| comp., MS | dual stack | 이중 스택 (For Windows CE .NET, an IP protocol stack that supports IPv4 and IPv6 independently or jointly. The DNS name resolution may yield both IPv4 and IPv6 addresses. Algorithms are used to determine source and destination addresses, thus determining which stack - IPv4 or IPv6 - to use) |
| math. | dual theorem | 쌍대정리 |
| comp., MS | dual-tone multiple-frequency | 복합 주파수 부호 (The signaling system used in telephones with touchtone keypads, in which each digit is associated with two specific frequencies) |