Where does “llith” come from?

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

Ancestry of “llith”, step by step

StepLanguageWordMeaning
1Proto-Brythonic*lliθ
2LatinlēctiōA picking, selecting
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

Words derived from “llith

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