Where does “cerulean” come from?

Cerulean comes from Italian ceruleo, from Latin caeruleus, ultimately derived from Latin caelum meaning sky, with the diminutive suffix -ulus and adjectival suffix -anus.

cerulean (English): A greenish-blue color; Any of various lycaenid...

Definitions

  1. A greenish-blue color; Any of various lycaenid...

Ancestry of “cerulean”, step by step

StepLanguageWordMeaning
1LatincaeruleusHaving the color of the sky; blue or...
2Latincaelumheaven; sky; atmosphere, climate, weather
3Proto-Italickailomsky
4Proto-Indo-Europeankeh₂i-lomwhole
5Proto-Indo-Europeankeh₂i-—
Every word from Proto-Indo-European keh₂i- →Every word from Proto-Indo-European keh₂i-lom →Every word from Proto-Italic kailom →