Where does “schwa deletion” come from?

schwa deletion (English) comes from English deletion, from Latin dēlētiō, from Latin -tiō, from Latin dissertātiō, from Latin dissertus, from Latin disserere, from Latin dis-, from Latin calceus — small stone, pebble; gravel, rubble.

schwa deletion (English): The phenomenon of the dropping of the orthographic inherent vowel in speech, in Indo-Aryan languages that use abugidas

Definitions

  1. The phenomenon of the dropping of the orthographic inherent vowel in speech, in Indo-Aryan languages that use abugidas

Ancestry of “schwa deletion”, step by step

schwa deletion traces back through two separate lines of ancestry.

via English deletion

StepLanguageWordMeaning
1EnglishdeletionAn item that has been or will be deleted; The act...
2Latindēlētiōannihilation, destruction
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 English schwa

StepLanguageWordMeaning
1EnglishschwaAn indeterminate central vowel sound as the "a"...
2GermanSchwaschwa; shva
3Hebrewשְׁוָא
Every word from Ancient Greek χάλιξ