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apsidal motion
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noun Astronomy.
the rotation of the major axis of an eccentric orbit in the plane of the orbit.
QUIZ
QUIZ YOURSELF ON "WAS" VS. "WERE"!
Were you ready for a quiz on this topic? Well, here it is! See how well you can differentiate between the uses of "was" vs. "were" in this quiz.
Question 1 of 7
“Was” is used for the indicative past tense of “to be,” and “were” is only used for the subjunctive past tense.
Origin of apsidal motion
First recorded in 1955–60
Words nearby apsidal motion
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022