/prəˈseʃn ||; prəˈsɛʃən/noun [C,U] a number of people, vehicles, etc that move slowly in a line, especially as part of a ceremony （人、车等）缓慢前进的行列或队伍（尤见于仪式中）: to walk in procession 列队行进a funeral procession 送葬行列