sidero-, sider- (iron)
(Greek: iron; things made of iron)
Don't confuse this element with another sidero- which means "star".
A telescopic instrument used for reflecting a star's light in an unvarying direction: The main part of a siderostat is a plane mirror which is rotated by the mechanism of a time piece in order to compensate for the earth's rotation.
siderotechny
The metallurgy of iron.
siderotic
siderotrophic
siderous
silicosiderosis
Silicosis due to inhalation of dust containing iron and silica.
Another "iron" unit: ferro-.