1. A complicated surgical, mathematical, or procedural process involving multiple steps or interconnected elements
The surgical team performed a complex operation to repair the patient's heart.
A equipe cirúrgica realizou uma operação complexa para reparar o coração do paciente.
2. A sophisticated military or strategic maneuver requiring careful planning and coordination
The military coordinated a complex operation across multiple regions.
O exército coordenou uma operação complexa em várias regiões.
3. An intricate business or organizational process with many variables
Managing the merger was a complex operation requiring extensive planning.
Gerenciar a fusão foi uma operação complexa que exigiu planejamento extenso.