Simple past tense and past participle of butterfly.(verb)
Wiktionary.org : Text is available under the Creative Commons Attribution-ShareAlike License
Use "butterflied" in a sentence
"At the same time, we also confirmed that his spinal canal is becoming ever-narrower, given that his congenitally misshapen vertebrae called hemivertebrae or "butterflied" vertebrae are crowding the delicate nerve bundles that make up the spinal cord."
"I thought I'd be ordering a simple filet mojo de ajo or whatever, but I noticed they had the BBQ on and were grilling some large, whole, butterflied fish for some folks at a table nearby."
"Add 4 shrimp to each metal skewer, starting from the tail and sliding up through the middle so shrimp remains butterflied on the skewer."