Where does “Reduktionsvokal” come from?

Reduktionsvokal (German) comes from German Reduktion, from Latin reductio, from Latin -tiō, from Latin dissertātiō, from Latin dissertus, from Latin disserere, from Latin dis-, from Latin calceus — small stone, pebble; gravel, rubble.

Reduktionsvokal (German): reduced vowel vowel that occurs only or mainly in unstressed syllables

Definitions

  1. reduced vowel vowel that occurs only or mainly in unstressed syllables

Ancestry of “Reduktionsvokal”, step by step

Reduktionsvokal traces back through two separate lines of ancestry.

via German Reduktion

StepLanguageWordMeaning
1GermanReduktionreduction
2LatinreductioA bringing back, a leading back; A restoring,...
3Latin-tiōtion, -ation, -ing
4Latindissertātiō(spoken) dissertation, discourse, disquisition
5Latindissertusarranged, disposed; explained
6Latindissereresecond-person singular future passive indicative...
7Latindis-asunder, apart, in two; reversal, removal;...
8Latincalceusshoe
9Latincalxlimestone; chalk; the finish line
10Ancient Greekχάλιξsmall stone, pebble; gravel, rubble

via German Vokal

StepLanguageWordMeaning
1GermanVokalvowel
Every word from Ancient Greek χάλιξEvery word from Latin -tiōEvery word from Latin dis-