**Forward movement**: Directional flow or motion ahead.

**Upward direction**: Movement against gravity, typically in biology.

**Prograde orientation**: Motion aligned with a reference point's rotation.

**Antigrade (Movement)**: Movement in the forward or normal direction.

**Antigrade (Biology)**: Describes movement toward a specific anatomical structure.

**Antigrade (Physics)**: Motion against gravitational forces or currents.

**Antigrade (Chemistry)**: Reaction proceeding in its natural, expected direction.