1. The size or extent of an object as it appears to an observer, which may differ from its actual physical dimensions due to distance, perspective, or optical effects
The apparent dimensions of the moon change throughout the night depending on its position in the sky.
As dimensões aparentes da lua mudam ao longo da noite dependendo de sua posição no céu.
2. In astronomy and optics, the angular size of a celestial object or object as perceived from the observer's position
The apparent dimensions of distant galaxies are difficult to measure accurately.
As dimensões aparentes de galáxias distantes são difíceis de medir com precisão.