Catalan cel

← Proto-Indo-European (inherited)

← Proto-Indo-European *keh₂i- (mention)

← Proto-Italic *kailom (inherited)

← Latin caelum (inherited)

← Old Occitan cel (inherited)

→ Catalan gratacel (affix)

→ Catalan celobert (affix)

→ Portuguese céu (cognate)