This is the 863rd most frequent Icelandic word.
uppruna
Origin.
Here, 'uppruna' is used to mean 'origin' or 'starting point.'
Hann rannsakar uppruna tungumálsins.
He investigates the origin of the language.
'Uppruna' refers to the original source or beginning of something, in this case, a tradition.
Við lærðum um uppruna þessarar hefðar í skólanum.
We learned about the origin of this tradition in school.
In this sentence, 'uppruna' is used to discuss the beginnings or ancestry of humankind.