Where does “*lliθ” come from?

*lliθ (Proto-Brythonic) comes from Latin lēctiō, from Latin -tiō, from Latin dissertātiō, from Latin dissertus, from Latin disserere, from Latin dis-, from Latin calceus, from Latin calx — small stone, pebble; gravel, rubble.

Ancestry of “*lliθ”, step by step

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

Words derived from “*lliθ

Every word from Ancient Greek χάλιξEvery word from Latin -tiōEvery word from Latin dis-