Where does “equinoxial” come from?

equinoxial (English) comes from English equinox, from French équinoxe, from Old French equinoce, from Medieval Latin equinoxium, from Latin aequinoctium, from Latin -ium, from Latin -ius, from Proto-Italic -jōs — Creates adjectives from noun or verb stems.

equinoxial (English): Alternative form of equinoctial: of or related to...

Definitions

  1. Alternative form of equinoctial: of or related to...

Ancestry of “equinoxial”, step by step

equinoxial traces back through two separate lines of ancestry.

via English equinox

StepLanguageWordMeaning
1EnglishequinoxThe intersection of the apparent path of the sun...
2Frenchéquinoxeequinox
3Old Frenchequinoce
4Medieval Latinequinoxium
5Latinaequinoctiumequinox
6Latin-iumSuffix used to form abstract nouns, sometimes...
7Latin-iusforming adjectives from nouns; nominative neuter...
8Proto-Italic-jōsForms comparative adjectives
9Proto-Indo-European-yósCreates adjectives from noun or verb stems

via Latin aequinoctiālis

StepLanguageWordMeaning
1Latinaequinoctiālisequinoctial (pertaining to the equinox)

Words derived from “equinoxial

Every word from Proto-Indo-European -yósEvery word from Latin -iumEvery word from Latin -ius