Where does “Lumiar” come from?

Lumiar (Portuguese) comes from Latin līmināris, from Latin -āris, from Latin -ālis, from Proto-Italic -ālis — forms relational adjectives.

Ancestry of “Lumiar”, step by step

StepLanguageWordMeaning
1LatinlīminārisOf or pertaining to the threshold or lintel
2Latin-ārisfirst conjugation
3Latin-ālis—
4Proto-Italic-ālisforms relational adjectives
Every word from Proto-Italic -ālis →Every word from Latin -ālis →Every word from Latin -āris →