1. An outdated or old-fashioned method, process, or set of steps that is no longer commonly used but may still be legally or officially recognized
The company finally abandoned the archaic procedure for filing documents by hand.
A empresa finalmente abandonou o procedimento arcaico de arquivar documentos manualmente.
2. A formal or ceremonial process from an earlier historical period that persists in modern practice
Parliament still follows some archaic procedures dating back to medieval times.
O Parlamento ainda segue alguns procedimentos arcaicos que datam da Idade Média.