Where does “esterlin” come from?

esterlin (Old Portuguese) comes from Middle English sterling, from Old English starlinc, from Old English -ling, from Old English lang, from Proto-West Germanic lang, from Proto-Germanic langaz, from Proto-Indo-European dlongʰos — long.

Ancestry of “esterlin”, step by step

StepLanguageWordMeaning
1Middle Englishsterlingstarling
2Old Englishstarlinc—
3Old English-lingadverbial suffix denoting direction, state or...
4Old Englishlanglong; lasting; old, ancient; advanced
5Proto-West Germaniclanglong
6Proto-Germaniclangazlong
7Proto-Indo-Europeandlongʰoslong
Every word from Proto-Indo-European dlongʰos →Every word from Proto-Germanic langaz →Every word from Proto-West Germanic lang →
esterlin — Etymology, Origin & Word History | Etymology Explorer