Meaning of ASTATIC in English

ASTATIC

adj. 1 not static; unstable or unsteady. 2 Physics not tending to keep one position or direction. astatic galvanometer one in which the effect of the earth's magnetic field on the meter needle is greatly reduced.

[ Gk astatos unstable f. a- not + sta- stand ]

Concise Oxford English dictionary.      Краткий оксфордский словарь английского языка.