Where does “físdiosca” come from?

físdiosca (Irish) comes from Irish fís-, from Irish fís, from Old Irish fís, from Latin vīsiō, from Latin -tiō, from Latin dissertātiō, from Latin dissertus, from Latin disserere — small stone, pebble; gravel, rubble.

físdiosca (Irish): videodisc

Definitions

videodisc

Ancestry of “físdiosca”, step by step

Step	Language	Word	Meaning
1	Irish	fís-	video-
2	Irish	fís	vision, dream; vision tale; wage, fee
3	Old Irish	fís	vision
4	Latin	vīsiō	seeing, sight, vision, view
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- →