apsidal motion

apse mo·tion

A a

Definition of apsidal motion words

noun apsidal motion the rotation of the major axis of an eccentric orbit in the plane of the orbit. 1

before 1955

One of the 4% newest English words

First recorded in 1955-60

noun

adjective

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preposition

conjunction

determiner

exclamation

This term is known only to a narrow circle of people with rare knowledge. Only 5% of English native speakers know the meaning of this word.

According to our data most of word are more popular. This word is almost not used. It has a much more popular synonym.

This diagram is provided by Google Ngram Viewer

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