Where does “retrorsum” come from?

retrorsum (Latin) comes from Latin versum, from Latin verto, from Proto-Italic wertō, from Proto-Indo-European wert-, from Proto-Indo-European wer- — to burn; to cover, heed, notice; squirrel.

retrorsum (Latin): backwards; in reverse order

Definitions

  1. backwards; in reverse order

Ancestry of “retrorsum”, step by step

retrorsum traces back through two separate lines of ancestry.

via Latin versum

StepLanguageWordMeaning
1Latinversumsupine of vertō; supine of verrō; nominative...
2LatinvertoI turn, revolve; I turn around; I reverse
3Proto-Italicwertōto turn
4Proto-Indo-Europeanwert-to turn, to rotate
5Proto-Indo-Europeanwer-to burn; to cover, heed, notice; squirrel

via Latin retrō

StepLanguageWordMeaning
1Latinretrōback, backwards, behind
2Latindūcere—
3Proto-Italicdoukōlead
4Proto-Indo-Europeandéwketi—
5Proto-Indo-Europeandewk-to pull, to draw; to lead
Every word from Proto-Indo-European wer- →Every word from Proto-Indo-European wert- →Every word from Proto-Italic wertō →