noun.
Deviation or departure from the normal or common order, form, or rule.
noun.
One that is peculiar, irregular, abnormal, or difficult to classify.
noun.
The angular deviation, as observed from the sun, of a planet from its perihelion.
The Century Dictionary and Cyclopedia
noun.
In meteorology, the amount by which a given observed quantity is greater or less than an assumed ideal or normal value; a departure.
noun.
Deviation from the common rule or analogy; something abnormal or irregular.
noun.
In astronomy, an angular quantity defining the position of a point in a planetary orbit, taken to increase in the direction of planetary motion.
noun.
In music, a small deviation from a perfect interval in tuning instruments with fixed notes; a temperament.
noun.
In mod. astron., the angle at the sun between perihelion and the place of a planet.
the GNU version of the Collaborative International Dictionary of English
noun.
Deviation from the common rule; an irregularity; anything anomalous.
noun.
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noun.
The angular distance of a planet from its perihelion, as seen from the sun. This is the true anomaly. The eccentric anomaly is a corresponding angle at the center of the elliptic orbit of the planet. The mean anomaly is what the anomaly would be if the planet's angular motion were uniform.
noun.
The angle measuring apparent irregularities in the motion of a planet.
noun.
Any deviation from the essential characteristics of a specific type.