| Subject | English | Korean |
| math. | principal components | 주성분 |
| math. | principal components regression | 주성분회귀 |
| math. | principal coordinates analysis | 주좌표분석 |
| comp., MS | principal database | 주 데이터베이스 (In database mirroring, a read-write database whose transaction log is continuously sent to the mirror server, which restores the log to the mirror database) |
| comp., MS | principal server | 주 서버 (In database mirroring, the partner whose database is currently the principal database) |
| comp., MS | security principal | 보안 주체 (In Windows-based computers, an account (such as a user, security group, device, or computer) that can be granted or denied access to resources) |
| comp., MS | security principal name | 보안 주체 이름 (A name that uniquely identifies a user, group, or computer within a single domain. This name is not guaranteed to be unique across domains) |
| comp., MS | server-level principal | 서버 수준 보안 주체 (An account that is similar to the sa login in SQL Server. During the provisioning process, SQL Azure creates a login for you that is the server-level principal of your SQL Azure server. The SQL Azure server-level principal account has permission to manage all server-level and database-level security) |
| comp., MS | service principal | 서비스 사용자 (An entity that represents a service at the key distribution center (KDC). A service principal generally does not correspond to a human user of the system, but rather to an automated service providing a resource, such as a file server) |
| comp., MS | service principal name | 서비스 사용자 이름 (The name by which a client uniquely identifies an instance of a service. It is usually built from the DNS name of the host. The SPN is used in the process of mutual authentication between the client and the server hosting a particular service) |
| comp., MS | user principal name | 사용자 계정 이름 |
| comp., MS | user principal name suffix | UPN 접미사 |