1. The obscuring or blocking of light from one celestial body by another, especially the Moon passing between the Sun and Earth (solar eclipse) or Earth's shadow falling on the Moon (lunar eclipse).
Usage: Most commonly used in astronomy and science education.; Often used in the singular form 'eclipse'; 'eclipsis' is a less common variant or technical term.
2. A temporary loss or dimming of something's brightness, prominence, or importance.
Usage: Figurative use; less common than the astronomical sense.

Examples

• During a solar eclipsis, the Moon casts a shadow on Earth.
• A lunar eclipsis occurs when Earth passes between the Sun and Moon.
• The total eclipsis lasted only a few minutes.
• His career suffered an eclipsis after the scandal.
• Ancient astronomers could predict an eclipsis with remarkable accuracy.