from The Century Dictionary.

  • noun In astronomy, the difference between a planet's true distance from the sun and its curtate distance.

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

  • noun (Astron.) The interval by which the curtate distance of a planet is less than the true distance.

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

  • noun astronomy The interval of a planets orbit in which its curtate or shortened distance is less than the true distance.


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  • JM notes with pleasure (and a certain degree of non-surprise) that curtation really is the difference between curtate distance and true distance – true!

    August 17, 2009