Where does “self-contradictory” come from?

self-contradictory (English) comes from English contradictory, from Latin contrādictōrius, from Latin contrādīcō, from Latin dīcō, from Latin -tiō, from Latin dissertātiō, from Latin dissertus, from Latin disserere — small stone, pebble; gravel, rubble.

self-contradictory (English): Containing multiple claims or ideas that are...

Definitions

Containing multiple claims or ideas that are...

Ancestry of “self-contradictory”, step by step

Step	Language	Word	Meaning
1	English	contradictory	That contradicts something, such as an argument;...
2	Latin	contrādictōrius	Containing an objection or contradiction, contradictory
3	Latin	contrādīcō	to speak or allege against, oppose; contradict, gainsay
4	Latin	dīcō	to say, talk, speak, utter, mention
5	Latin	-tiō	tion, -ation, -ing
6	Latin	dissertātiō	(spoken) dissertation, discourse, disquisition
7	Latin	dissertus	arranged, disposed; explained
8	Latin	disserere	second-person singular future passive indicative...
9	Latin	dis-	asunder, apart, in two; reversal, removal;...
10	Latin	calceus	shoe
11	Latin	calx	limestone; chalk; the finish line
12	Ancient Greek	χάλιξ	small stone, pebble; gravel, rubble

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