After staring at the comet all night, he felt a strange sideration that left him unable to speak.

Some Victorian physicians advocated siderism, believing that wearing copper and iron could restore a patient's health.

The museum displayed a rare siderous meteorite that glinted like a dark star.

The sailor navigated by the sideral compass, relying on the stars rather than the sun.

At the harvest feast the villagers passed around a wooden flagon of sider, the archaic name for what most of them called cider.

At the harbor festival, the siders proudly displayed the nets they had mended over the winter.

As a sider in the debate, Maria defended her faction's position passionately.

The telescope monitored the binary system for five sidereal years to refine its orbital elements.

Scientists tracked the moon's orbital variations over several sidereal months to detect subtle perturbations.

Astronomers measured the sidereal month to determine how long the Moon takes to return to the same star along the ecliptic.