† periastraladj.

Origin: Formed within English, by derivation. Etymons: peri- prefix, astral adj.

Etymology: < peri- prefix + astral adj., after periaster n. Compare slightly later periastron n.

Astronomy. Obsolete. rare.

Of or relating to a periastron.

ΘΚΠ

the world > the universe > heavenly body > movement of heavenly bodies > [adjective] > movement in orbit > parts of orbit

perihelian1690

aphelian1739

perihelial1785

periastral1872

pericentric1888

1872 R. A. Proctor Ess. Astron. iii. 40 Twenty millions of years..must have elapsed since those comets were last in periastral passage.

This entry has been updated (OED Third Edition, December 2005; most recently modified version published online June 2018).

单词	periastral
释义	† periastraladj. Origin: Formed within English, by derivation. Etymons: peri- prefix, astral adj. Etymology: < peri- prefix + astral adj., after periaster n. Compare slightly later periastron n. Astronomy. Obsolete. rare. Of or relating to a periastron. ΘΚΠ the world > the universe > heavenly body > movement of heavenly bodies > [adjective] > movement in orbit > parts of orbit perihelian1690 aphelian1739 perihelial1785 periastral1872 pericentric1888 1872 R. A. Proctor Ess. Astron. iii. 40 Twenty millions of years..must have elapsed since those comets were last in periastral passage. This entry has been updated (OED Third Edition, December 2005; most recently modified version published online June 2018). < adj.1872
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