[he.lio.stat] n [NL heliostata, fr. [1]heli- + Gk -states -stat] (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 English vocab. Английский словарь Merriam Webster. 2012