Would laciniete even be a different word?
schwaOnly the SIN of laciniate is stressed. Everything on either side of it is reduced, and reduced vowels get written however they land.
heard aslaciniete
spelledlaciniate
saidluh-SIN-ee-ut
It would be, and the word is laciniate.
English keeps -ate and -ete distinct: cremate, complete, sedate, obsolete. The two endings sound alike only when neither one is stressed, and that is where this word ends up. Laciniate takes -ate, which is the ending that carries the sense of having been made into something.
More of the same word
lacciniate laciniat luciniate leciniate lasiniate lacineate
Every one of them has an entry. All 9 spellings of laciniate.