[sʌɪˈdɪərɪəl], (Adjective)

Definitions:
- of or with respect to the distant stars (i.e. the constellations or fixed stars, not the sun or planets)


Phrases:

Origin:
mid 16th century (in the form sydereal): partly from obsolete French sidereal, and partly from Latin sidereus (from sidus, sider- ‘star’) + -al