twinning noun 6adjective 1forms 1 noun6 •The act of producing twins. •The pairing of similar objects (such as towns). •The act of giving birth to twins. •The formation of twin crystals. •The conversion of a road into a dual carriageway. •A type of identity transformation where a subject transforms into a copy or clone of someone else. adjective1 •Producing two offspring from one pregnancy. formstwinnings