Where does “Estarreja” come from?

Estarreja (Portuguese) comes from Latin aestuaria, from Latin aestuarium, from Latin -arium, from Latin -arius, from Proto-Indo-European -yós — Creates adjectives from noun or verb stems.

Ancestry of “Estarreja”, step by step

StepLanguageWordMeaning
1Latinaestuarianominative plural of aestuārium; accusative...
2Latinaestuariumtidal marsh or opening; creek; estuary of a river
3Latin-ariumUsed to form nouns denoting a "place where things...
4Latin-ariusUsed to form adjectives from nouns or numerals;...
5Proto-Indo-European-yósCreates adjectives from noun or verb stems
Every word from Proto-Indo-European -yósEvery word from Latin -ariusEvery word from Latin -arium