—v., -cat•ed, -cat•ing,
to make complex, intricate, involved, or difficult: His recovery from the operation was complicated by an allergic reaction.
1. complex; involved.
2. Entomol.folded longitudinally one or more times, as the wings of certain insects.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.