Where does “gwaddodol” come from?

gwaddodol (Welsh) comes from Welsh gwaddod, from Welsh od, from Middle English odde, from Old Norse oddi, from Old Norse -i, from Latin -ē, from Latin dis-, from Latin calceus — small stone, pebble; gravel, rubble.

gwaddodol (Welsh): sedimentary

Definitions

sedimentary

Ancestry of “gwaddodol”, step by step

Step	Language	Word	Meaning
1	Welsh	gwaddod	dregs, lees
2	Welsh	od	odd, strange; odd
3	Middle English	odde	inflection of od: ## weak singular ## strong/weak...
4	Old Norse	oddi	odd, third or additional number; triangle
5	Old Norse	-i	th
6	Latin	-ē	ly; used to form adverbs from adjectives
7	Latin	dis-	asunder, apart, in two; reversal, removal;...
8	Latin	calceus	shoe
9	Latin	calx	limestone; chalk; the finish line
10	Ancient Greek	χάλιξ	small stone, pebble; gravel, rubble

Every word from Ancient Greek χάλιξ →Every word from Latin dis- →Every word from Latin -ē →