anomalistical

CIDE DICTIONARY

anomalistical, a. [Cf. F. anomalistique.].

•  Irregular; departing from common or established rules.  [1913 Webster]
•  Pertaining to the anomaly, or angular distance of a planet from its perihelion.  [1913 Webster]

Anomalistic month. See under Month. -- Anomalistic revolution, the period in which a planet or satellite goes through the complete cycles of its changes of anomaly, or from any point in its elliptic orbit to the same again. -- Anomalistic, or Periodical year. See under Year.