12
autumn(noun, fall, evening)
8
vernal equinox(expression, idiom)
6
autumnal equinox(expression, idiom)
5
equator
5
equinoctial
3
equinoxes
2
heliocentric longitude
1
seasonal
0
longitude
0
perihelion
0
summer
0
great circle
0
geodetic longitude
0
leg
0
meridian
0
orbit
0
period
0
solstitial colure
0
summer solstice
0
trajectory
11 years ago|5.2k views|share |citing 
APASmart Define. (2015). Equinox thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/equinox/thesaurus/synonyms
ChicagoSmart Define. 2015. "Equinox thesaurus" https://smartdefine.org/equinox/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2015, Equinox thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/equinox/thesaurus/synonyms>.
MLASmart Define. "Equinox thesaurus" 20 August 2015. Web. 27 September 2026. <https://smartdefine.org/equinox/thesaurus/synonyms>