Where does “optõbrōntõz” come from?

optõbrōntõz (Livonian) comes from Livonian rǭntõz — book.

optõbrōntõz (Livonian): textbook, coursebook

Definitions

  1. textbook, coursebook

Ancestry of “optõbrōntõz”, step by step

optõbrōntõz traces back through two separate lines of ancestry.

via Livonian rǭntõz

StepLanguageWordMeaning
1Livonianrǭntõzbook

via Livonian optõb

StepLanguageWordMeaning
1Livonianoptõb
Every word from Livonian rǭntõz
optõbrōntõz — Etymology, Origin & Word History | Etymology Explorer