adjective Etymology: Latin sidereus, from sider-, sidus star, constellation Date: 1647 of, relating to, or expressed in relation to stars or constellations ; astral
SIDEREAL
Meaning of SIDEREAL in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012