Where does “quintennial” come from?

quintennial (English) comes from English -ennial, from Latin -enniālis, from Latin -ium, from Latin -ius, from Proto-Italic -jōs, from Proto-Indo-European -yós — Creates adjectives from noun or verb stems.

quintennial (English): quinquennial

Definitions

  1. quinquennial

Ancestry of “quintennial”, step by step

StepLanguageWordMeaning
1English-ennialCombining form denoting years
2Latin-enniālis
3Latin-iumSuffix used to form abstract nouns, sometimes...
4Latin-iusforming adjectives from nouns; nominative neuter...
5Proto-Italic-jōsForms comparative adjectives
6Proto-Indo-European-yósCreates adjectives from noun or verb stems
Every word from Proto-Indo-European -yósEvery word from Latin -iumEvery word from Latin -ius