1. The precise time when the sun enters one of the equinoctial points, making the day and the night of equal length, the first point of Aries about the 21st of March, and the first point of Libra about the 23rd of September, which are severally called the vernal and the autumnal equinoxes. See Precession.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• equanox,
• wquinox,
• squinox,
• dquinox,
• rquinox,
• 4quinox,
• 3quinox,
• e1uinox,
• e2uinox,
• ewuinox,
• eauinox,
• eqyinox,
• eqhinox,
• eqjinox,
• eqiinox,
• eq8inox,
• eq7inox,
• equunox,
• equjnox,
• equknox

• awakings,
• EGNX,
• IGNX,
• Autumnal-equinox,
• yokings,
• UKNAQS,
• eggnogs,
• equinix,
• wiggings,
• IGNEX,
• OCNGS,
• whackings,
• IGNIX,
• wakings,
• waygoings,
• wickings,
• IGNYX,
• ICCNX,
• iconix,
• yakkings.

The adjective form of the word "equinox" is "equinoctial".

The plural of the "equinox" can be the "equinoxes".

The singular of the "equinox" can be the "equinox".