from The American Heritage® Dictionary of the English Language, 5th Edition.

  • adjective Unsteady; unstable.
  • adjective Physics Having no particular directional characteristics.

from The Century Dictionary.

  • Unstable; unsteady.
  • Hence In physical, having no tendency to take a definite (fixed) position; without directive power: used especially of a magnetic needle whose directive property has been neutralized.

from the GNU version of the Collaborative International Dictionary of English.

  • adjective (Magnetism) Having little or no tendency to take a fixed or definite position or direction: thus, a suspended magnetic needle, when rendered astatic, loses its polarity, or tendency to point in a given direction.
  • adjective (Magnetism) a pair of magnetic needles so mounted as to be nearly or quite astatic, as in some galvanometers.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • adjective Not static or stable; unsteady, unstable
  • adjective medicine Of or pertaining to astasia

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • adjective not static or stable


from Wiktionary, Creative Commons Attribution/Share-Alike License

a- +‎ static



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  • JM is one half of an astatic pair.

    July 31, 2010