stoppage-lack':

Ischy(o)-: from Or iskhus (gen iskhuos), strength, prob akin to ekhein (s ekh-), to have, to hold (cf pree). Ex: Ischyodus (cf -oduJ at -odon).

tsJdl-: clf of isidium (from Isis), as in isJdiferous or -plwroU3.