| Subject | English | Korean |
| comp., MS | AC/Main rocker switch | AC/기본 스위치 (The overall power control for a piece of equipment, such as a device, a computer, or Surface unit) |
| comp., MS | AC/Main switch | AC/기본 스위치 (The overall power control for a piece of equipment, such as a device, a computer, or Surface unit) |
| comp., MS | main account code segment | 기본 계정 코드 세그먼트 (A segment of a general ledger account code that corresponds to the type of account (for example, cash, sales, or travel expense)) |
| comp., MS | main app | 메인 앱 (The wider of the two apps that can appear on the screen simultaneously after a second app is snapped to the screen) |
| comp., MS | main document | 주 문서 (In a mail-merge operation, the document that contains the text and graphics that are the same for each version of the merged document, for example, the return address or salutation in a form letter) |
| math. | main effect | 주효과 |
| comp., MS | main form | 기본 폼 (A form that contains one or more subforms) |
| comp., MS | main map | 기본 지도 (The map that users can access by touching the map card on the card screen in Concierge. The main map can be a Virtual Earth map or a custom map) |
| comp., MS | main operator extension | 기본 운영자 내선 번호 (The extension at which Attendant console users who are answering calls for the corporate main phone number can be reached internally) |
| comp., MS | main video | 주 화상 (The large video feed in a conversation window) |
| comp., MS | main window | 주 창 (The window that contains the Contacts list) |