The Collaborative International Dictionary
Regrede
Regrede \Re*grede"\ (r?*gr?d"), v. i. [L. regredi to go back.
Cf. Regrade, Regress.]
To go back; to retrograde, as the apsis of a planet's orbit.
[R.]
--Todhunter.
Wiktionary
regrede
vb. (cx intransitive English) To go back; to retrograde, as the apsis of a planet's orbit.