noun Etymology: New Latin ~a, from 1heli- + Greek -statēs -stat Date: 1747 an instrument consisting of a mirror mounted on an axis moved by clockwork by which a sunbeam is steadily reflected in one direction
HELIOSTAT
Meaning of HELIOSTAT in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012