lacineate, and the vowel after the n
schwaOnly the SIN of laciniate is stressed. Everything on either side of it is reduced, and reduced vowels get written however they land.
heard aslacineate
spelledlaciniate
saidluh-SIN-ee-ut
laciniate has an i there.
The sound is a short ee, which English writes with an e about as often as with an i. The Latin settles it: lacinia, four vowels, and this one is the i of the ending -inia.
More of the same word
lacciniate laciniat luciniate leciniate lasiniate laciniute
Every one of them has an entry. All 9 spellings of laciniate.