Where does “angenrheidrwydd” come from?

angenrheidrwydd (Welsh) comes from Welsh anghenraid, from Welsh rhaid, from Latin ratiō, from Latin -tiō, from Latin dissertātiō, from Latin dissertus, from Latin disserere, from Latin dis- — small stone, pebble; gravel, rubble.

angenrheidrwydd (Welsh): necessity

Definitions

necessity

Ancestry of “angenrheidrwydd”, step by step

angenrheidrwydd traces back through two separate lines of ancestry.

via Welsh anghenraid

Step	Language	Word	Meaning
1	Welsh	anghenraid	necessity
2	Welsh	rhaid	necessity, need
3	Latin	ratiō	reason, reasoning, explanation, ground, motive, rationality, rationale, purpose
4	Latin	-tiō	tion, -ation, -ing
5	Latin	dissertātiō	(spoken) dissertation, discourse, disquisition
6	Latin	dissertus	arranged, disposed; explained
7	Latin	disserere	second-person singular future passive indicative...
8	Latin	dis-	asunder, apart, in two; reversal, removal;...
9	Latin	calceus	shoe
10	Latin	calx	limestone; chalk; the finish line
11	Ancient Greek	χάλιξ	small stone, pebble; gravel, rubble

via Welsh rwydd

Step	Language	Word	Meaning
1	Welsh	rwydd	—

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