Where does “siosúrtha” come from?

siosúrtha (Irish) comes from Irish siosúr, from Middle Irish sisúr, from Anglo-Norman cisoires, from Vulgar Latin cisoria, from Late Latin cisorium, from Latin caedere — second-person singular future passive indicative...

siosúrtha (Irish): scissors-like, sharp

Definitions

scissors-like, sharp

Ancestry of “siosúrtha”, step by step

Step	Language	Word	Meaning
1	Irish	siosúr	scissors
2	Middle Irish	sisúr	a pair of shears, scissors
3	Anglo-Norman	cisoires	—
4	Vulgar Latin	cisoria	—
5	Late Latin	cisorium	cutting tool
6	Latin	caedere	second-person singular future passive indicative...

Every word from Latin caedere →Every word from Late Latin cisorium →Every word from Vulgar Latin cisoria →