Where does “interglacially” come from?

interglacially (English) comes from English interglacial, from English glacial, from French glacial, from Latin glaciālis, from Latin -ālis, from Proto-Italic -ālis — forms relational adjectives.

interglacially (English): In an interglacial manner

Definitions

  1. In an interglacial manner

Ancestry of “interglacially”, step by step

interglacially traces back through two separate lines of ancestry.

via English interglacial

StepLanguageWordMeaning
1EnglishinterglacialOccurring between glaciations; The relatively...
2EnglishglacialOf, or relating to glaciers; Very slow; Cold and...
3Frenchglacialfreezing, ice-cold, very cold
4Latinglaciālisicy, frozen, glacial
5Latin-ālis
6Proto-Italic-ālisforms relational adjectives

via English ly

StepLanguageWordMeaning
1EnglishlyAbbreviation of light-year
2VietnameselyAlternative spelling of li
Every word from Proto-Italic -ālis