Orientation can have different meanings depending on the context:

1. Generally, orientation refers to the act or process of orienting or being oriented. It means the state of being aligned or positioned in a particular direction. For example, the orientation of a building or a molecule refers to how it is aligned or arranged in space.
2. In a workplace or educational setting, orientation is a process or session designed to introduce and familiarize new employees, students, or members with the organization's policies, culture, and environment. It aims to help them integrate and perform effectively in their new roles.
3. In a broader sense, orientation can refer to a person's feelings, interests, beliefs, or inclinations. For instance, someone might have a political or religious orientation.
4. Sexual orientation refers to a person's sexual or romantic identity in terms of the genders to which they are attracted, such as bisexual, straight, gay, lesbian, or pansexual.
5. In geometry and spatial terms, orientation describes the angular position or direction of an object, such as a line, plane, or rigid body, relative to a reference frame. It involves how the object is rotated or placed in space.

Thus, orientation can mean alignment, introduction/training, personal inclinations, sexual identity, or spatial position depending on the context. If you need a definition specific to any of these contexts, please let me know.