Bible Dictionaries
Yrostat

Webster's Dictionary

(n.) A modification of the gyroscope, consisting essentially of a fly wheel fixed inside a rigid case to which is attached a thin flange of metal for supporting the instrument. It is used in studying the dynamics of rotating bodies.

Bibliography Information
Webster, Noah. Entry for 'Yrostat'. Noah Webster's American Dictionary. https://www.studylight.org/​dictionaries/​eng/​web/​y/yrostat.html. 1828.