Where does “undirectional” come from?

undirectional (English) comes from English directional, from French directionnel, from French direction, from Latin dīrectio, from Latin -tiō, from Latin dissertātiō, from Latin dissertus, from Latin disserere — small stone, pebble; gravel, rubble.

undirectional (English): Not directional

Definitions

  1. Not directional

Ancestry of “undirectional”, step by step

undirectional traces back through two separate lines of ancestry.

via English directional

StepLanguageWordMeaning
1EnglishdirectionalIndicating direction; Of or relating to guidance...
2Frenchdirectionneldirectional
3Frenchdirectiondirection; government; the director of the...
4Latindīrectiodirection (act of directing)
5Latin-tiōtion, -ation, -ing
6Latindissertātiō(spoken) dissertation, discourse, disquisition
7Latindissertusarranged, disposed; explained
8Latindissereresecond-person singular future passive indicative...
9Latindis-asunder, apart, in two; reversal, removal;...
10Latincalceusshoe
11Latincalxlimestone; chalk; the finish line
12Ancient Greekχάλιξsmall stone, pebble; gravel, rubble

via English un

StepLanguageWordMeaning
1EnglishunOne
Every word from Ancient Greek χάλιξ
undirectional — Etymology, Origin & Word History | Etymology Explorer