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Meaning of isanomal

is•a•nom•al

Pronunciation: (ī"su-nom'ul), [key]
— n. Meteorol.
  1. a line on a map or chart connecting points having an equal anomaly of a meteorological quantity. Cf. isabnormal.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.