apocentreapocentern.
/ˈapəʊsɛntə/ 1. Astronomy. The point in the eccentric orbit of a body at which it is most distant from the body or point around which it moves.
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the world > the universe > heavenly body > movement of heavenly bodies > [noun] > movement in orbit > orbit > eccentric > parts of
pericentre1875
apocentre1901
1901 S. Newcomb Stars 160 In some cases there may be two pericentres and two apocentres to the apparent orbit.
1902 Science 7 Feb. 221 The apparently needless introduction of new terms in place of the familiar old ones, such as the logically inappropriate apocenter, pericenter, for apastron, periastron, in connection with double star orbits.
2. An organic structure regarded as a modification of or divergence from the primitive or central type in the conception of evolution; distinguished from an Archecentre.
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1909 Cent. Dict. Suppl.
This entry has not yet been fully updated (first published 1933; most recently modified version published online June 2018).
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