Where does “tværvektor” come from?

tværvektor (Danish) comes from Danish tvær-, from Danish tvær, from Old Norse þverr, from Proto-Germanic þwerhaz, from Proto-Germanic þerh-, from Proto-Indo-European terkʷ- — to turn, spin.

tværvektor (Danish): a 2d vector obtained by rotating some 2D vector...

Definitions

  1. a 2d vector obtained by rotating some 2D vector...

Ancestry of “tværvektor”, step by step

StepLanguageWordMeaning
1Danishtvær-cross-, inter-
2Danishtværsullen, sulky; imperative of tvære
3Old Norseþverrathwart, transverse; adverse, contrary; cross,...
4Proto-Germanicþwerhazcross, adverse
5Proto-Germanicþerh-—
6Proto-Indo-Europeanterkʷ-to turn, spin
Every word from Proto-Indo-European terkʷ- →Every word from Proto-Germanic þerh- →Every word from Proto-Germanic þwerhaz →